A bullet is fired vertically into a 1.40 kg block of wood at rest directly above it.

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A bullet is fired vertically into a 1.40 kg block of wood at rest directly above it.

[From: ] [author: ] [Date: 11-08-05] [Hit: ]

6m (approx).-equate momentum of bullet to momentum of the block at rest.......

If the bullet has a mass of 29.0 g and a speed of 550 m/s, how high will the block rise after the bullet becomes embedded in it?

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Momentum of bullet will be transfered to the block of wood.

m1v1=m2v2
0.029*550=1.4v2
v2=0.029*550/1.4=11.4m/s.

v²=u²+2ax
(11.4)²=2(9.81)(x)
130=19.62x
x=6.6m (approx).

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equate momentum of bullet to momentum of the block at rest. =)

1

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