Question

A gun weighing 10kg fires bullet of 50 g with velocity 500m/s.with what velocity does the gun recoil.what is resultant momentum of gun and bullet before and after firing

Answer 1

2.5 ms^-1

The resultant momentum before and after firing would be 0

Explanation:

Given that,

Weight of the gun = 10 Kg

Weight of the bullet = 50 g

Velocity of firing = 500 m/s

To find,

The velocity of the recoiling of the gun = ?

Resultant momentum of gun and bullet before and after firing = ?

Procedure:

Using the law of conservation of Linear Momentum,

$P_{1} = P_{f}$ = 0

0 + 0 = 10 * V + 50/1000 * 500 = 0

∵ V = 2.5 m/s^-1.

The resultant momentum before and after firing would be zero.

Learn more: Laws of motion

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