Question

A machine gun can fire 50 g bullets with a velocity of
150 m s-1 A 60 kg stone is moving towards the
machine gun velocity of 10 m s-1. How many bullets
must be fired from the gun to just stop the stone in its
tracks?
(Ans. 80)​

Answer 1

Answer:

Let n bullets be fired in one second . To stop the tiger in his track rate of change of momentum of bullets = rate of change of momentum of tiger n(50×10-³)×150=60×10

n=60×1050x10-³×150=80 .

Explanation:

Answer 2

Answer:

80

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