Question

A stationary ball weighing 0.25 kg acquires a speed of 10 m/s when hit by a hockey stick. The impulse imparted to the ball is :

• A. 2.5 Ns
• B. 2.0Ns
• C. 1.5 Ns
• D. 0.5Ns

Answer 1

The correct option is A 2.5 Ns

impulse is change in momentum so initial momentum is zero and final momentum is $2.5Ns$ .

so impulse is $2.5Ns$ which is change in momentum .

so the answer is A.