Force is defined as the physical quantity which has the capability to change the shape, and speed of the body.
Effects of force with examples :
1. It can make a stationary object move. Example: pushing a box at rest on the table brings the box in motion.
2. It can stop a moving object. Example: catching a moving ball and making it stop on your hand.
3. It can change the speed of a moving object. Example: increasing the speed of a bicycle by exerting more force on the peddle.
4. It can change the direction of a moving object. Example: changing the direction of motion of the cricket ball by the batsman after he hits the ball.
5. It can change the shape or size of an object. Example: squeezing toothpaste and changing its shape.