![]() Newton's Third Law is sometimes called the Law of Reciprocal Actions or the Action-Reaction Law: It also states that the greater the force on an object, the greater the acceleration. What this law says is that while you are applying a force on an object, it will continue to accelerate or change its velocity. Since they have a direction, they are called vectors. Note that the force F and acceleration a are in the same direction. This law determines the relationship between force, mass and acceleration, which is It may pushing in direct contact or pulling at a distance in the case of gravity. ![]() The word "deceleration" is usually used when the object is slowing down, but that also is acceleration or changing of the velocity.Ī force is a push or pull on the object. Usually, we are talking about the object speeding up. The acceleration of an object of constant mass is proportional to the force acting upon it.Īcceleration is the changing of the velocity of the object. The second law is sometimes called the Law of Dynamics, because it concerns forces and what causes objects to move. ( For more information, see Motion and the Law of Inertia.) Newton's Second Law Inertia can be best demonstrated in outer space. The Law of Inertia assumes there is no friction or other resistive force that can slow down an object.
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