A cricket ball of mass 150g is moving with a velocity of 12 m/s and is hit by a bat so that the ball is turned back with a velocity ishit by a bat so that the ball is turned back with a velocity of 20 m/s. The force of blow acts for 0.01 s on the ball. What is the averate force exerted by the bat on the ball?

A cricket ball of mass 150g is moving with a velocity of 12 m/s and is

1.	A cricket ball of mass 150g is moving with a velocity of 12 m/s and is hit by a bat so that the ball is turned back with a velocity ishit by a bat so that the ball is turned back with a velocity of 20 m/s. The force of blow acts for 0.01 s on the ball. What is the averate force exerted by the bat on the ball?
Answer» 240N 300N 380N 480N Solution :The BAT exerts an impulsive FORCE on the ball. Impulse = CHANGE in momentum `therefore F xx t= m(v-u)` `therefore F xx 10^(-2)= 150xx10^(-3)[ 20-(-12)]` `therefore F = (32xx15xx10^(-2))/(10^(-2)) = 480N`