After school activity ks3
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Forces can be pushes or pulls and change the motion of objects, though they cannot be seen. A force is measured in units called newtons. Gravity is a force that attracts all objects towards each other. The gravitational force between the Earth and an object creates its weight, with greater mass meaning greater weight. Pressure is a force per unit area calculated as force divided by area and measured in pascals.
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Force powerpoint
This document defines and describes various types of forces including contact forces, non-contact forces, gravity, and net force. It explains that a force is a push or pull on an object that can cause it to start, stop, or change motion. Forces are described by their strength and direction. The SI unit for force is the Newton, and one Newton is approximately the force needed to lift a lime. Forces can be contact forces like friction or non-contact forces like gravity and magnetism. Gravity is the attractive force between all objects with mass. Weight and mass are related but different, as weight can change with gravity but mass does not. Net force is calculated by adding or subtracting forces based on their direction.
NA Dynamics - E-Learning
The document discusses forces and friction. It begins by stating the learning objectives of identifying forces on objects using free body diagrams and explaining the effects of friction. It then defines different types of forces - contact forces like normal reaction and tension, and non-contact forces like gravitational, electric, and magnetic. It also discusses how to draw free body diagrams and examples like a crate held by a string. Finally, it defines friction as the opposing contact force and discusses how friction affects motion, giving examples like braking a car. It ends by stating some factors that affect the frictional force between surfaces.
NA - Mass Weight Density - E-Learning
The bottles did not move because of inertia - their mass resists changes in motion. It is a real demonstration of inertia. To pull it off:
- The bottles are glued to the table, so they cannot slide when pushed.
- The person pushes on the table, not directly on the bottles, so the bottles feel less force than what appears.
- Quick camera cuts and angles are used to hide that the bottles are fixed in place. It's an illusion that fools the eye through clever filming.
So in summary, it uses inertia and camera tricks to create the illusion that the bottles are resisting the push through their own inertia alone.
Mass vs Weight 5
Mass describes the amount of matter in an object and remains constant, while weight describes the gravitational force on the object which can change depending on location. Mass is measured in kilograms and is a scalar quantity, while weight is measured in Newtons and is a vector pointing downward due to gravity. Near Earth's surface, an object's weight is approximately 10 times greater than its mass due to the gravitational acceleration of 9.8 m/s2.
Unit 5 lesson 1
This document discusses the differences between mass and weight. Mass is the amount of matter in an object and stays constant, while weight is the gravitational force exerted on an object and can vary depending on the strength of gravity. Gravity is the force of attraction between two objects that depends on their masses and distance between them. Gravity causes weight by pulling on objects without touching them.
Chapter 10 Notes: Gravity
This document discusses gravity and the factors that affect how objects fall. It explains that gravity is a force that pulls all objects towards Earth. The greater the mass of an object, the stronger the gravitational pull, and objects that are closer together experience a stronger gravitational attraction. When only gravity is acting on an object, its acceleration is 9.8 m/s2, so all objects in free fall accelerate at the same rate regardless of their mass. Air resistance acts to slow falling objects based on their size and shape, but two objects in a vacuum would hit the ground simultaneously according to Galileo's experiments.
Mass Vs Weight 4
Mass and weight are different properties of objects. Mass is a measure of the amount of matter in an object and remains constant wherever it is located, while weight is the gravitational force acting on an object which can change depending on location and is measured in Newtons. The relationship between mass and weight is that an object's weight equals its mass multiplied by the local gravitational acceleration.
Mass, Weight and Density
The document defines and discusses key concepts around mass, weight, density, and their relationships. It provides explanations and examples of how mass is different from weight and does not depend on location. It describes density as a ratio of mass to volume, and how density determines if objects will float or sink in liquids. Examples are given for calculating weight on Earth and other planets, as well as volume and density calculations using given values.
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Force powerpoint
This document defines and describes various types of forces including contact forces, non-contact forces, gravity, and net force. It explains that a force is a push or pull on an object that can cause it to start, stop, or change motion. Forces are described by their strength and direction. The SI unit for force is the Newton, and one Newton is approximately the force needed to lift a lime. Forces can be contact forces like friction or non-contact forces like gravity and magnetism. Gravity is the attractive force between all objects with mass. Weight and mass are related but different, as weight can change with gravity but mass does not. Net force is calculated by adding or subtracting forces based on their direction.
NA Dynamics - E-Learning
The document discusses forces and friction. It begins by stating the learning objectives of identifying forces on objects using free body diagrams and explaining the effects of friction. It then defines different types of forces - contact forces like normal reaction and tension, and non-contact forces like gravitational, electric, and magnetic. It also discusses how to draw free body diagrams and examples like a crate held by a string. Finally, it defines friction as the opposing contact force and discusses how friction affects motion, giving examples like braking a car. It ends by stating some factors that affect the frictional force between surfaces.
NA - Mass Weight Density - E-Learning
The bottles did not move because of inertia - their mass resists changes in motion. It is a real demonstration of inertia. To pull it off:
- The bottles are glued to the table, so they cannot slide when pushed.
- The person pushes on the table, not directly on the bottles, so the bottles feel less force than what appears.
- Quick camera cuts and angles are used to hide that the bottles are fixed in place. It's an illusion that fools the eye through clever filming.
So in summary, it uses inertia and camera tricks to create the illusion that the bottles are resisting the push through their own inertia alone.
Mass vs Weight 5
Mass describes the amount of matter in an object and remains constant, while weight describes the gravitational force on the object which can change depending on location. Mass is measured in kilograms and is a scalar quantity, while weight is measured in Newtons and is a vector pointing downward due to gravity. Near Earth's surface, an object's weight is approximately 10 times greater than its mass due to the gravitational acceleration of 9.8 m/s2.
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This document discusses the differences between mass and weight. Mass is the amount of matter in an object and stays constant, while weight is the gravitational force exerted on an object and can vary depending on the strength of gravity. Gravity is the force of attraction between two objects that depends on their masses and distance between them. Gravity causes weight by pulling on objects without touching them.
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This document discusses gravity and the factors that affect how objects fall. It explains that gravity is a force that pulls all objects towards Earth. The greater the mass of an object, the stronger the gravitational pull, and objects that are closer together experience a stronger gravitational attraction. When only gravity is acting on an object, its acceleration is 9.8 m/s2, so all objects in free fall accelerate at the same rate regardless of their mass. Air resistance acts to slow falling objects based on their size and shape, but two objects in a vacuum would hit the ground simultaneously according to Galileo's experiments.
Mass Vs Weight 4
Mass and weight are different properties of objects. Mass is a measure of the amount of matter in an object and remains constant wherever it is located, while weight is the gravitational force acting on an object which can change depending on location and is measured in Newtons. The relationship between mass and weight is that an object's weight equals its mass multiplied by the local gravitational acceleration.
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The document defines and discusses key concepts around mass, weight, density, and their relationships. It provides explanations and examples of how mass is different from weight and does not depend on location. It describes density as a ratio of mass to volume, and how density determines if objects will float or sink in liquids. Examples are given for calculating weight on Earth and other planets, as well as volume and density calculations using given values.
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The document discusses the difference between mass and weight. Mass is the amount of matter in an object and does not change in different gravitational fields, while weight is the gravitational force exerted on an object's mass and does change in different fields due to differing gravitational strengths. It provides examples of how much an object would weigh on different planets and celestial bodies due to their different gravitational pulls, noting weight is calculated by multiplying mass by the local gravitational field strength.
Mass Vs Weight 2
Mass is an intrinsic property of an object that does not change based on location, whereas weight is the force exerted on an object by gravity that does change depending on location. Mass is measured in kilograms and remains constant, while weight is measured in Newtons and varies depending on the strength of gravity. Key differences include mass staying the same when far from Earth but weight decreasing, and mass being a measure of total material while weight represents the gravitational pull.
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A force is any influence that causes an object to change its movement, direction, or shape. Forces can make an object begin moving, change speed or direction of motion, or cause a flexible object to deform. There are two main types of forces: contact forces, which act between objects in direct contact, and non-contact forces, which act over a distance. Contact forces include normal forces, friction, and tension. Non-contact forces include gravitational, electric, and magnetic forces. Newton's laws of motion describe how forces cause motion or changes in motion.
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1) A skydiver feels weightless while falling and accelerating due to gravity, heavier when the parachute deploys due to increased air resistance, and a normal weight at terminal velocity when acceleration equals zero.
2) Newton's Third Law states that for every action force there is an equal and opposite reaction force. Examples include a hand pushing a wall, which results in the wall pushing back on the hand, or a foot kicking a ball which causes the ball to push back on the foot.
3) Action and reaction forces do not cancel each other out, but rather act on different objects. They can cause motion, such as a swimmer pushing back on water which pushes the swimmer forward, but
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Forces can be categorized as either contact forces or non-contact forces. Contact forces require direct physical contact between objects and include applied force, normal force, friction, tension, and spring force. Non-contact forces act over a distance and include gravitational force, electrical force, and magnetic force. A net force is the single force equivalent to multiple forces acting on an object. An unbalanced net force will cause acceleration, while a balanced net force where forces are equal will not change an object's motion. Common units for measuring force include the newton.
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- Apparent weight is the normal force felt and measured by a scale. It depends on acceleration, so can differ from standard weight in accelerated frames like elevators. Weightlessness occurs when apparent weight is zero due to free-fall cancellation of gravity and acceleration.
- Astronauts in orbit experience weightlessness not because gravity is absent, but because they are in constant free fall around the Earth at the same acceleration as its gravity, keeping their apparent weight at zero though gravity still acts.
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This document provides an overview of gravitational concepts including:
1) Isaac Newton deduced the law of universal gravitation after observing an apple fall from a tree and realizing gravity must be the force attracting objects to Earth.
2) Newton's law of universal gravitation states that every object in the universe attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
3) Examples are provided to demonstrate how the gravitational force equation works and the small but crucial value of the gravitational constant G.
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Gravity is a force of attraction that acts between all objects with mass. Gravity causes all objects to accelerate towards each other at the same rate, so heavier and lighter objects fall at the same speed. The strength of gravity depends on the mass of the object, so gravity is stronger on large planets like Jupiter than on smaller bodies like the moon. Mass is a measure of the amount of matter in an object and does not change in different locations, while weight is the measure of the gravitational force acting on an object, so weight varies depending on the gravitational pull of different planets. Newton's three laws of motion describe how forces cause motion and changes in motion.
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Forces are pushes or pulls that can be measured in Newtons. There are two types of forces: contact forces that act through direct physical contact, and non-contact forces like gravity that act over a distance. Forces always act in equal size but opposite direction pairs. Gravity is the non-contact force that attracts all masses and causes their weight. While mass remains constant, weight depends on the gravitational force acting on an object.
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- Newton's third law states that every action has an equal and opposite reaction. While an apple attracts the Earth, the Earth's much greater mass means this force is negligible and the Earth does not move towards the apple.
- The universal law of gravitation states that every object attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
- This law explains important phenomena such as the Earth's gravitational force, the moon's orbit around Earth and Earth's orbit around the sun, and how the sun and moon cause ocean tides.
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The document defines key concepts related to gravity including acceleration due to gravity, gravitational field, gravitational field strength, mass, force, and weight. It provides examples of calculating time, velocity, and weight on Earth and the moon using the formulas and given values of gravitational acceleration. The conclusion is that the acceleration of falling objects is independent of their mass.
Multichoice Quiz on Forces KS3
Forces can be pushes or pulls that change the motion or shape of objects, though forces themselves cannot be seen. Gravity is a force of attraction between all objects with mass. Weight is the gravitational force of the Earth on an object, measured in newtons. Pressure is the amount of force applied over an area, calculated as force divided by area and measured in pascals.
FORCE-1.pptx
Forces cause objects to speed up, slow down, change direction or shape. Force is measured in Newtons and can be contact forces like friction or non-contact forces like gravity. The overall force acting on an object from multiple forces is called the resultant force. Mass is the amount of matter in an object while weight is the force of gravity, so an object's weight can vary in different gravitational fields but its mass stays the same.
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Mass is an intrinsic property of an object that does not change based on location, whereas weight is the force exerted on an object by gravity that does change depending on location. Mass is measured in kilograms and remains constant, while weight is measured in Newtons and varies depending on the strength of gravity. Key differences include mass staying the same when far from Earth but weight decreasing, and mass being a measure of total material while weight represents the gravitational pull.
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This document discusses the four fundamental forces in the universe and provides details about gravitation and gravity. It explains that gravity causes objects to accelerate at 9.8 m/s^2 toward Earth and keeps planets, moons, and galaxies in orbit. The inverse square law states that gravitational force decreases with the square of the distance between objects. Kepler's laws describe orbital motion in the solar system, and Newton showed that gravity explains why planets follow elliptical orbits with the sun at one focus.
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1) A skydiver feels weightless while falling and accelerating due to gravity, heavier when the parachute deploys due to increased air resistance, and a normal weight at terminal velocity when acceleration equals zero.
2) Newton's Third Law states that for every action force there is an equal and opposite reaction force. Examples include a hand pushing a wall, which results in the wall pushing back on the hand, or a foot kicking a ball which causes the ball to push back on the foot.
3) Action and reaction forces do not cancel each other out, but rather act on different objects. They can cause motion, such as a swimmer pushing back on water which pushes the swimmer forward, but
Nature and types of forces
Forces can be categorized as either contact forces or non-contact forces. Contact forces require direct physical contact between objects and include applied force, normal force, friction, tension, and spring force. Non-contact forces act over a distance and include gravitational force, electrical force, and magnetic force. A net force is the single force equivalent to multiple forces acting on an object. An unbalanced net force will cause acceleration, while a balanced net force where forces are equal will not change an object's motion. Common units for measuring force include the newton.
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This document discusses the differences between mass and weight, Newton and Einstein's theories of gravity, and how gravity works. According to Newton, gravity is a force that attracts objects with mass. Einstein viewed gravity as the warping of spacetime by massive objects. Under Einstein's theory, objects follow curved paths in spacetime rather than experiencing a gravitational force.
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This document discusses gravity and its effects. It explains that Isaac Newton first hypothesized that gravity causes apples and the moon to fall toward Earth. Gravity is a force that attracts all objects and depends on the masses and distance between objects. Newton's law of universal gravitation states that gravitational force is proportional to the product of masses and inversely proportional to the distance between them. Gravity and inertia combine to keep objects like Earth and the moon in orbit. Mass is the amount of matter in an object, while weight is the gravitational force on the object.
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The document discusses gravity and its effects on motion. It explains that gravity is a force of attraction between objects due to their masses. Gravity causes all objects to accelerate towards each other at 9.8 m/s^2. Air resistance can affect the motion of falling objects by slowing their acceleration. Isaac Newton formulated the law of universal gravitation, which states that gravitational force depends on the masses of objects and the distance between them.
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Forces are pushes or pulls that can be measured in Newtons. There are two types of forces: contact forces that act through direct physical contact, and non-contact forces like gravity that act over a distance. Forces always act in equal size but opposite direction pairs. Gravity is the non-contact force that attracts all masses and causes their weight. While mass remains constant, weight depends on the gravitational force acting on an object.
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- The universal law of gravitation states that every object attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
- This law explains important phenomena such as the Earth's gravitational force, the moon's orbit around Earth and Earth's orbit around the sun, and how the sun and moon cause ocean tides.
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The document defines key concepts related to gravity including acceleration due to gravity, gravitational field, gravitational field strength, mass, force, and weight. It provides examples of calculating time, velocity, and weight on Earth and the moon using the formulas and given values of gravitational acceleration. The conclusion is that the acceleration of falling objects is independent of their mass.
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Multichoice Quiz on Forces KS3
Forces can be pushes or pulls that change the motion or shape of objects, though forces themselves cannot be seen. Gravity is a force of attraction between all objects with mass. Weight is the gravitational force of the Earth on an object, measured in newtons. Pressure is the amount of force applied over an area, calculated as force divided by area and measured in pascals.
FORCE-1.pptx
Forces cause objects to speed up, slow down, change direction or shape. Force is measured in Newtons and can be contact forces like friction or non-contact forces like gravity. The overall force acting on an object from multiple forces is called the resultant force. Mass is the amount of matter in an object while weight is the force of gravity, so an object's weight can vary in different gravitational fields but its mass stays the same.
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Gravity is an invisible force that pulls objects with mass towards the center of planets like Earth. Gravity gives objects weight, which is measured in Newtons and describes the force of gravitational pull, while mass describes the amount of material in an object and does not change in different gravitational fields. On Earth, a 50kg person has a weight of 500 Newtons, but their mass would remain 50kg on the Moon where gravity is weaker - there their weight would be 83.3 Newtons due to the lower gravitational pull.
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This document contains a series of questions about concepts related to gravity, including:
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Laws of Motion.ppt
Here are the solutions:
1. F=ma
m=F/a
m=15000N/6m/s^2
m=2500kg
2. F=ma
a=F/m
a=30N/1.5kg
a=20m/s^2
3. Fnet=ma
Fapplied-Ffriction=ma
Fapplied-50N=ma
Fapplied=ma+50N
Fapplied=(15kg)(10m/s^2)+50N
Fapplied=150N+50N
Fapplied=200N
Newtons_Laws.ppt
Newton's three laws of motion are summarized as follows:
1. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
2. The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
3. For every action, there is an equal and opposite reaction.
Forces
Forces can start, stop, or change the motion of objects. There are two main types of forces - contact forces, which require touching objects, like pushing or pulling, and non-contact forces, which act over a distance without touching, like magnetic or gravitational forces. Forces are measured in units called newtons. Forces can be balanced, where opposing forces cancel each other out, or unbalanced, where a net force causes motion or changes the motion of an object. Mass is a measure of the amount of matter in an object, while weight is the force of gravity acting on an object's mass.
Newtons_Laws.ppt
Newton's three laws of motion are summarized as follows:
1) An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.
2) The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
3) For every action, there is an equal and opposite reaction.
Newtons_Laws.ppt
Newton's three laws of motion are summarized as follows:
1) Newton's First Law states that objects at rest will stay at rest and objects in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
2) Newton's Second Law establishes the relationship between an object's mass, its acceleration, and the applied force as F=ma.
3) Newton's Third Law describes that for every action force there is an equal and opposite reaction force.
Newtons_Laws.ppt
Newton's three laws of motion are summarized as follows:
1) Newton's First Law states that objects at rest will stay at rest and objects in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
2) Newton's Second Law establishes the relationship between an object's mass, its acceleration, and the applied force as F=ma.
3) Newton's Third Law describes that for every action force there is an equal and opposite reaction force.
Newtons_Laws (1).ppt
Newton's three laws of motion are summarized as follows:
1) An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.
2) The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
3) For every action, there is an equal and opposite reaction.
GRAVITATION Day 2.pptx
1. The document explains gravitational field as an example of a field of force, where gravitational force exists between all masses and depends on the masses and distance between them, following Newton's Law of Gravitation.
2. It states that weight is the force of gravitational attraction between an object and the Earth, and that gravitational force is a non-contact force that acts through space.
3. The gravitational field is represented by arrows directed towards the center of the Earth, and its strength decreases with increasing distance from the Earth's surface, where it is about 10 N/kg.
Lesson 2_ effects of forces.pptx about forces and its effects
Forces can cause objects to change motion, speed, direction or shape. A force is a push or pull that can be measured in Newtons, though forces cannot be seen directly. This document discusses different types of forces including gravity, friction, air resistance, upthrust and how forces affect objects. It provides examples of how pushing and pulling change the motion and shape of objects. An experiment is described to measure the difference between an object's weight in air and water, and how upthrust causes the weight to be less in water.
Gravity
1. Gravity is a force of attraction between all objects with mass. The strength of the gravitational force depends on the masses of the objects and increases with larger masses but decreases with greater distances between objects.
2. All objects on Earth accelerate towards the ground at a constant rate of 9.8 m/s2 due to Earth's gravity when dropped, though air resistance means smaller, less dense objects do not actually fall at this rate.
3. Gravity exists everywhere in the universe and is responsible for phenomena like planetary orbits and acceleration of objects.
Force and acceleration simplified
Forces can push or pull on objects and change their motion. A force is measured in Newtons. The net force on an object determines its acceleration according to F=ma. Newton's three laws describe how forces interact: 1) objects in motion stay in motion unless a force acts; 2) F=ma; 3) for every action there is an equal and opposite reaction. Centripetal force provides the inward pull that causes objects to travel in circular paths. Stability depends on the location of an object's center of mass relative to its base.
Force and acceleration simplified
Forces can push or pull on objects and change their motion. A force is measured in Newtons. The net force on an object determines its acceleration according to F=ma. Newton's three laws describe how forces interact: 1) objects in motion stay in motion unless a force acts, 2) F=ma, and 3) for every action there is an equal and opposite reaction. Centripetal force provides the inward force needed for circular motion. Levers, moments, and fulcrums can be used to make work easier by reducing the needed force. The location of an object's center of mass determines its stability.
Weight
This document discusses the differences between mass and weight. It defines weight as the force of gravity on an object, which can be calculated using the formula w=mg, where w is weight, m is mass, and g is gravitational acceleration. Mass remains constant regardless of location, but weight changes depending on the gravitational force. It provides examples of calculating weight on Earth and the moon using given masses and gravitational accelerations. The key points are that mass is a measure of amount of matter, weight is the gravitational force, and weight can be calculated as mass times gravitational acceleration, which differs on other planets/moons.
pptgravity-091010165847-phpapp01.pdf
The document discusses the law of gravitation and gravity. It states that all objects with mass exert an attractive gravitational force on each other, and that this force depends on the masses of the objects and the distance between them. It further explains that gravity is one of the four fundamental forces, and describes how gravitational acceleration causes all objects to fall at the same rate, regardless of their mass. The document also distinguishes between mass and weight, noting that weight is the gravitational force exerted on an object.
Forces
Forces are physical agents that can deform or change the motion of an object. Forces have magnitude, direction, and point of application. Forces cause elastic materials to deform when applied and return to their original shape, while plastic materials deform and do not return to their original shape. Hooke's law states that the extension of an elastic object is directly proportional to the applied force. Newton's second law relates force, mass, and acceleration, where acceleration is directly proportional to force for a given mass. Weight is the force of gravity on an object and is equal to its mass times the acceleration of gravity. Friction is a resisting force that opposes motion when objects contact each other. Levers are simple machines that multiply force using a ful
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After school activity ks3
- 1. FORCES KS3
- 2. FORCE FACTS! • A force can be a push or a pull. Whenever we are pushing or pulling, bending or lifting, squeezing or stretching, we are applying a force! • Forces cannot be seen but you can often see what it can does. • Forces can: – change the speed of an object – change the direction an object is moving in – change the size or shape of an object • Forces can be measured using a force meter. • Forces are measured in units called newton, and it has the symbol N.
- 3. GRAVITY • All objects have a force that attracts them towards each other. This is called gravity. • Gravity only becomes noticeable when there is a really massive object like a moon, planet or star. • We are pulled down towards the ground because of gravity. • The gravitational force pulls in the direction towards the centre of the Earth. • Gravitational force increases when: – the masses are bigger – the objects are closer
- 4. WEIGHT • Weight is a force caused by gravity. The weight of an object is the gravitational force between the object and the Earth. The more mass the object has the greater its weight will be. • Weight is a force, so it's measured in newtons.
- 5. PRESSURE • You can push a drawing pin into a piece of wood because you have applied pressure onto the drawing pin. • To work out pressure, you need to know two things: • the force or weight applied • the area over which the force or weight works. • This is the equation for working out pressure: • pressure = force ÷ area • Pressure is measured in units called Pascals (Pa).
- 7. Question 1 The unit of force is called the? a) Newton b) Tonne c) Kilogramme d) Metre
- 9. CORRECT GO TO THE NEXT QUESTION
- 10. Question 2 Gravitational force increases when: a) the mass of the object is smaller b) the mass of the object is bigger c) the mass of the object is the same d) there is no mass
- 12. CORRECT GO TO THE NEXT QUESTION
- 13. Question 3 Weight is the force caused by: a) the Earth b) eating c) gravity d) newton
- 15. CORRECT GO TO THE NEXT QUESTION
- 16. Question 4 The equation for working out pressure is: a) Pressure = mass ÷ speed b) Pressure = weight ÷ mass c) Pressure = area ÷ force d) Pressure = force ÷ area
- 18. CORRECT GO TO THE NEXT QUESTION
- 19. END OF TEST WELL DONE!!!!!