Question

State the law of conservation of momentum. Why is a person hit harder when he falls on a hard floor than when he falls on sand from the same height? A bullet of mass 20g is fired horizontally with a velocity of 100m/s from a pistol of mass 50kg.caculate the recoil velocity of the pistol.

Answer 1

1. The law of conservation of linear momentum states that for an isolated system,the total momentum before collision is equal to the total momentum after collision.

2. Read more on Brainly.in - https://brainly.in/question/691105#readmore

3.

Mass of the gun(m2)=2kg

Mass of the bullet(m1)=0.02kg

Velocity of the bullet(v1)= 150m/s

Let the recoil velocity of the gun=v 2

Applying momentum conservation

m1v1=m2v2

substituting,

The recoil velocity will be 1.5m/s.