Question

A bullet of mass 40 gm is fired from a gun of mass 8kg with a velocity of 800m/sec . Calculate the recoil velocity of gun

Answer 1

Answer:

A bullet of mass 40 g is fired from a gun of mass 10 kg. If velocity of bullet is 400 m/s, then the recoil velocity of the gun will be

Let velocity of gun is v.

There is no external force acting, so linear momentum will conserve.

Before the firing, Linear Momentum =0

After the firing, Linear momentum =0.04×400+10×v

⇒0.04×400+10×v=0 ⇒v=1.6m/s

Hence, 1.6m/s opposite to the direction of the bullet.

Explanation:

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