Question

a cricket ball of mass 100 grams is moving with a velocity of 10 metre per second and it is hit by a bat so that it turns back and moves with a velocity of 20 metre per second find the impulse Impulse of the force the force acts for 0.01 second​

Answer 1

10 N/s

Explanation:

Actually impulse formula is (J=Ft)

F -force (ma)

t-time

here there are two conditions

1.at a=10 m/s

2.at a=20 m/s

when a=10

J=ft

=(100*10)*0.01

=10 N/s

when a=20

J=ft

= (100*20)*0.01

= 20 N/s

one is in forward direction and another is in backward direction so,

20-10 =10N/s