A gun of mass 2.0kg fires a bullet of mass 16 x 10 -2kg due...

JAMB 1984

A gun of mass 2.0kg fires a bullet of mass 16 x 10 ^-2kg due East. If the bullet leaves the nozzle of the gun with a velocity of 150ms^-1, what is the recoil velocity of the gun?

A. 150ms^-1 due West
B. 1.2 x 10^-4ms^-1 due West
C. 1.2ms^-1 due West
D. 1.2ms^-1 due East
E. 150ms^-1 due East

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Correct Answer: Option C

Explanation

Gun momentum = bullet momentum

2 x v = 1.6 x 10^-2 x 150

v = 1.2ms^-1 in opposite direction

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A gun of mass 2.0kg fires a bullet of mass 16 x 10 -2kg due...

Correct Answer: Option C

Explanation

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