question_answer

A cricket ball of mass 70 g moving with a velocity of 0.5 m/s is stopped by a player in 0.5 s. What is the force exerted by the player to stop it?

Answer:

                Mass of cricket ball, m = 70 g = 0.07 kg Initial velocity, u= 0.5 m/s, Final velocity v = 0, t =0.5s From Newton's second law, of motion, we have                          (1)  (Negative sign shows that force is in opposite direction to motion of ball) Magnitude of force = 0.07 N                       (1)