3.9 Friction
When a cricket ball is hit by a bat, it moves on the ground with a reasonably large velocity. According to Newton's first law of motion, it should continue to move with constant velocity. But practically, we observe that it eventually stops after covering some distance. Does any force act on the ball in the opposite direction that stops it? Yes, it is the force of friction between the ball and the ground that opposes the motion of the ball.