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Instantaneous Force and Impulse

A gun fires a...

Question

A gun fires a bullet of mass $50 g$ with a velocity of $30 m / s e c$ . Because of this gun is pushed back with a velocity of $1 m / s e c$ . The mass of the gun.

A

15 k g

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B

30 k g

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C

1.5 k g

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D

20 k g

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Solution

The correct option is B $1.5 k g$
$M_{G} = \frac{M_{B} V_{B}}{V_{G}} = \frac{50 \times 10^{- 3} \times 30}{1} = 1.5 k g$

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