(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An 19-g bullet is shot vertically into an 5-kg block. The block lifts upward 5 mm. The bullet penetrates the block in a time interval of 0.001 s. Assume the force on the bullet is constant during penetration. The impulse on the block due to capture of the bullet is closest to:

2. Relevant equations

Impulse = P_2 - P_1

3. The attempt at a solution

1/2(mbullet + mblock)v2^2 = (mbullet + mblock)gy

v2 = sqrt(2gy)

v1 = ((mbullet + mblock)/mbullet)*v2

Impulse = m2v2 - m1v1

Comes out wrong, and didn't use the time given. I modeled my solution after a ballistic pendulum problem. Any pointers?

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# Homework Help: Bullet fired at a block of wood

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