This question kinda stumped me ....(adsbygoogle = window.adsbygoogle || []).push({});

Suppose that a ball of mass 0.25 Kg is moving downward at a speed of 15 m/s when it lands in your hand.

(a) If it takes .15 s to bring it to rest in your hand, what is the net impulse your hand exerts on the ball to bring it to rest? Give both size and direction

What i did for this problem was F = M (V<f> - V<i>) / Time

.................................OR F = -25N (when u solve it like i did)

i was thinking if impulse is in units N.S or Kg m/s - then this stuff that i did is incorrect...is the equation im using wrong? because i have different equations but this is the only one that encompasses all information given in the question.

part b asks: what is the average net force u exerted on the ball to stop it? Give both size and direction...for this i used F = m x a

.........................................OR F = 3.75 N when i solved...

this seems to easy, did i do something wrong? or is it correct?

Thanx

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# Homework Help: Momentum and Impulse!

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