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Force and motion 8
This document discusses force and motion. It defines force as a push or pull that causes an object to change its motion. It lists several types of forces: air resistance, applied, spring, frictional, gravitational, electrical, normal, and magnetic. For each force it provides a brief definition. It defines motion as a change in an object's position over time. It explains that balanced forces result in no motion, while unbalanced forces can change an object's motion. The net force on an object is the combination of all individual forces acting on it. Gravity is defined as the force of attraction between all objects, depending on their masses and distance between them.
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Force and motion 8
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- 2. WHAT IS FORCE? Aforce is a push or pull that causes an object to move faster or slower, stop, change direction, or change size or shape.
- 3. TYPES OF FORCE •Air Resistance Force • Applied Force • Spring Force • Frictional Force • Gravitational Force • Electrical Force • Normal Force • Magnetic Force
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- 5. Basically, it is frictionbetween an object and the air. AIR RESISTANCE Elephant and feather
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- 7. All matter ismade from atoms and/or molecules. The air is no exception. When something moves through the air, it bumps into the atoms and molecules AIR RESISTANCE
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- 9. Applied force iswhen a living creature puts pressure on a object APPLIED FORCE
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- 11. Is when anobject is pushed together, then when pressures taken away it pops back to its normal self. SPRING FORCE
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- 13. Frictional forces is presenteverywhere in our daily life. It is simply impossible to reduce it completely. FRICTIONAL FORCE
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- 15. Newton’s fiery ofgravitational forces: “Every particle of matter in the Universe attracts every other particle with a force that is directly proportional to the product of the masses of the particles and inversely proportional to the square of the distance between them GRAVITATIONAL FORCE
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- 17. The attractive orrepulsive interaction between any two charged objects is an electric force. Like any force, its affect upon objects. ELECTRICAL FORCE
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- 19. Normal force isthe support force exerted upon an object which is in contact with another stable object. For Example, if a Vase is resting upon a surface, then the surface is exerting an upward force upon the vase in order to support the weight of the Vase. NORMAL FORCE
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- 21. Magnetic force isthe same as gravitational forces in that no one knows truly what it is. Magnetic force is different from gravitational and electrical forces in that its potential and momentic energy is at the expense of an electrical field in time. MAGNETIC FORCE
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- 23. MOTION a change inthe position of an object over time. How do you know something has moved? A stationary (not moving) object such as a tree, street sign, or a line of the road.
- 24. A balanced forceis one in which the net force equals ZERO. Balanced Forces and Unbalanced Forces An unbalanced force is one in which the net force is greater than zero.
- 25. Do you thinkthere will be any motion? Balanced Forces 25 Newton 25 Newton
- 26. Do you thinkthere will be any motion? Unbalanced Forces 25 Newton 46 Newton
- 27. Only an UNBALANCEDforce can change the motion of an object Example: More Force cause you to move if they pulls with enough force. Their force is greater than the force you’re using to stay in place
- 28. The total combinationof the forces acting on an object is called NET FORCE. Can more than one force act on an object at the same time? Example: Gravity is pulling you down to Earth, the ground is supporting you, and your legs moving you forward as you run during PE..
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- 30. The force ofattraction between all objects. The amount of gravity depends on two things: 1. The objects’ masses 2. The distance between the two objects GRAVITY
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