A falling 1.0 kg ball has a velocity of 6 m/s just before it strikes the ground. It then bounces upward with a velocity of 4 m/s.

What is the impulse on the ball?

1.5 Ns
2.0 Ns
10 Ns
24 Ns

Question

A falling 1.0 kg ball has a velocity of 6 m/s just before it strikes the ground. It then bounces upward with a velocity of 4 m/s.

What is the impulse on the ball?

1.5 Ns
2.0 Ns
10 Ns
24 Ns

roadjester · Answer

What defines impulse?

roadjester · Answer

@thibui

anonymous · Answer

isn't it the change in momentum?

roadjester · Answer

correct. so can you calculate the initial and final momentum?

anonymous · Answer

initial p = 6 and final p = 4 ... so 2.0 Ns?

roadjester · Answer

yup

anonymous · Answer

thank you! :)

roadjester · Answer

No prob

anonymous · Answer

i worked out the problem again and it made sense; every time i do it, the answer is 2.0 Ns, but when i picked that for my answer, it says it's incorrect. do you know why that may be? @roadjester

roadjester · Answer

No I don't sorry. I know that a lot of times people over think things. I think I'm UNDER thinking things. :(