Newton's First Law of Motion: I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. This we recognize as essentially Galileo's concept of inertia, and this is often termed simply the "Law of Inertia".
Newton's First Law of Motion: I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. This we recognize as essentially Galileo's concept of inertia, and this is often termed simply the "Law of Inertia".
Newton's 1st law of motion ~by A.S.KhanA.Samad Khan
Heyo! This is a presentation on Newton's 1st Law of motion for you guys! There are Many GIFs (Animated Pictures) & a Video also on 1st Law which makes the PPT much more interesting.They will not work in Preview . You gotta download it to make'em work.Hope you Like it! :)
~Sam5010
Week 2 OverviewLast week, we studied the relationship between .docxmelbruce90096
Week 2 Overview
Last week, we studied the relationship between acceleration, velocity, displacement, and time. Acceleration in an object is caused by the force acting on it. This week, we'll study the relationship between force and acceleration. Central to this study are the laws of motion that Isaac Newton discovered in the 17th century.
You must have observed in daily life that when you apply brakes to a car, it takes some time before the car stops completely. The speed with which a train moves depends on the amount of force applied by the engine. A ball thrown at a wall bounces back. Newton's laws help you understand the motion of day-to-day objects and explain all this phenomena. These laws can also help you create realistic graphic animations!
Have you ever walked on slippery surfaces? If so, you would have realized how difficult it is to walk on them. Slippery surfaces have less friction, which makes it difficult to walk. In fact, surface transportation would be impossible without friction. This week, we take a closer look at this important force. We will use Newton's laws to analyze problems involving friction.
Newton’s First Law
What are Forces?
Forces are the result of the interaction between bodies. In simple words, a force is the push or pull acting on an object. For example, you exert a force on a rope to pull an object, and the rope pulls the object.
Here, we need a transition between the definition of forces and Newton’s Laws. We also need a couple of examples of how to draw a force diagram.
The Law of Inertia
Newton's first law of motion explains the relation between the force applied on an object and its motion.
The law states that:
An object continues to remain in a state of rest or of uniform motion in a straight line unless compelled by an external force to act otherwise.
This means that an object prefers to remain in a state of rest or uniform motion; in order to change the state it's in you need to apply force to it. Further, an object will always resist the force applied to it. The property of an object to resist an external force is called inertia, and for this reason, Newton's first law is called the law of inertia.
If you slide an object on a smooth floor with a given speed, the distance it moves depends upon the friction between the object and the floor. The smoother the floor, the greater the distance traveled by the object. The object eventually stops because of the external force of friction.
A force is required to change the velocity of a body. To understand this statement first recall from your study of kinematics that velocity is a vector with a magnitude (speed) and a direction. In the absence of a force, both speed and direction are constant. When a force acts on an object, it changes the speed, direction, or both of the objects.
There is no basic difference between an object at rest and an object in uniform motion; rest and uniform motion are relative terms. An object at rest with respec.
2. The law of Motion is formulated by Sir Isaac Newton
thus got the name of Newton’s Law of Motion. There are
physical three laws which are considered the basis for
classical mechanics. The law of motions describes the
relationship of force acting on body and the force which
gave of the motion. Newton's laws are applied to
physical objects which are considered or idealized as a
particle, in the sense that the extent of the body is
neglected in the evaluation of its motion. In the given
interpretation mass, acceleration, momentum, and the
most important part “force” are assumed to be externally
defined quantities
3.
4. Newton’s first law of Motion
(Inertia):
An object at rest stays at rest, unless an external,
unbalance force acts on it.
Newton's first law of motion applies to
both objects in motion and objects at
rest. Objects in motion have inertia
because they want to remain in motion.
For example a roller coaster has
inertia. When it starts a drop it wants
to continue moving in the same
direction at a constant speed. It
doesn't however because the tracks act
as an outside force and change the
roller coaster car's direction.
5. -Newton’s first law states that the speed of an object in
uniform in motion will remain constant unless there’s an
external force applied to it.
-An object at rest will remain at rest if there is no
external force applied to it.
-The first law of motion is also
called Law of Inertia
6. (Inertia)
Newton's first law applies
to object at rest as well.
An object at rest has
inertia because it wants
to stay at rest. The more
mass the object has the
greater the tendency that
it will remain at rest when
another force acts on it.
In the picture the car is in
a state of rest, and until
another force great
enough to move it acts
upon it, it will remain at
rest.
7.
8. Second law of motion
(acceleration)
~Newton's second law of motion pertains to the behavior of
objects for which all existing forces are not balanced.
~The second law states that the acceleration of an object is
dependent upon two variables - the net force acting upon the
object and the mass of the object.
9. What does it mean?
Everyone
unconsciously
knows the second
law. Everyone
knows the
heavier objects
require more
force to move the
same distance as
lighter objects
10. However, the Second Law gives us an exact
relationship between force, mass, and
acceleration. It can be expressed as a
mathematical equation:
F=MA
FORCE= MASS * ACCELERATIONS
11.
12. For every action there is an
equal and opposite re-action.
What does it means?
13. This means that for every force there is a
reaction force that is equal in size, but
opposite in direction. That is to say that
whenever an object pushes another object it
gets pushed back in the opposite direction
equally hard.
14. Let's study how a rocket works to understand
Newton's Third Law.
The rocket's action is to push down on the ground with the force
of its powerful engines, and the reaction is that the ground
pushes the rocket upwards with an equal force.
