Question

A bullet of mass 50 gram leaves a rifle of velocity 50 metre per second and forward direction.find the mass of the rifle if it required with a velocity of 0.5 m per second

Answer 1

Mass = 50 gm = 50 *10^(-3) kg,
Velocity = 1200 m/s,

( Recoil)F = 180 N

(nMV- 0)/ 1second = F,
Answer is 1 second because we have to get bullets per second and n is number of bullets.

(n* 50*10^(-3)* 1200 - 0)/ 1 = 180

Answer 2

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