Force And Motion

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A vegetable vendor applies force to push the cart, a driver applies force either to stop the car or to change the speed or direction of motion and a football player kicks the ball to set it in motion.

In all the above examples, the force applied on a body can bring about the following changes:

• It can change the state of rest of a body or change its position

• It can change the speed of the body

• It can change the direction of motion of a body

A Boy Hitting a Ball

Force is the external agent that changes the state of rest or uniform motion of a body along a straight line.