NEWTON'S LAWS OF MOTION
4.1 Motion
Motion occurs when a body covers distance with time. The quantity of motion is the product of mass of a body and the speed at which it moves. Momentum represents the quantity of motion and it is the time rate of change of momentum that determines which keeps-the body moving. Through ages man has observed motions of various bodies both in space and on smooth and rough planes. Out of these observations some laws that govern motion in general. It was Isaac Newton who formulated the three laws we now call Newton's, laws of motion. By applying these laws with certain conditions motion problems can be solved.
4.2 Laws of motion
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