A cricket ball of mass 150 g 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 of 20 m / s. If the duration of contact between the ball and the bat is 0.01 sec. The impulse of the force is:
1
4.8 N-S
2
7.4 N-S
3
1.2 N-S
4
4.7 N-S