Question

A 400 g baseball thrown with a velocity of 40 m/s is hit straight back at the pitcher with a velocity of -50m/s.
What is the change in momentum of the ball?
What is the impulse exerted on the ball by the bat?

Answer 1

P=mv

Answer 2

I know, but can someone give me more explanation.

Answer 3

You can find change in momentum by equating momentum before and after the collision:

change in momentum = p(after) - p(before)

impulse is a change in momentum. it's the same as what you find above.

Answer 4

Thanks.