A 50 g bullet is fired from a 10 kg gun with a speed of 500 m/s. What is the

A 50 g bullet is fired from a 10 kg gun with a speed of 500 m/s. What is the speed of the recoil of the gun?

Posted by: - christine
Posting Time: - 7/17/2015 1:08:13 AM
Subject: - Physics

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Best 5 Answers:-

Answer by:- Richard

Given the mass of the gun, M = 10 kg,
mass of the bullet, m = 0.05 kg
Speed of the bullet, v = 500 m/s.
Let the velocity of recoil of the gun = V
Using conservation of momentum, we get
Momentum after = momentum before
MV – mv = 0 (as initial momentum was zero)
or, MV = mv
or, 10*V = 500*0.05
or, V = 25/10 = 2.5 m/s

 
   

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