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Home Q & A Board Science-Related Homework Help Physics
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rjandmj82 rjandmj82
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11 years ago
A 5 lbm gun fires a 0.05 lbm bullet. The bullet leaves the gun at a velocity of 1500 ft/s in the x direction. If the gun is not restrained, what is its velocity just after the bullet leaves?
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wrote...
#1
11 years ago
momentum of gun and bullet are equal and opposite -
so mass x velocity is same for both
but mass of gun is 100x that of bullet - so velocity of gun will be 1/100 that of bullet
so velocity of gun = 1500/100 = 15ft/s
wrote...
#2
11 years ago
the ans is in the question 1500 ft/s
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