Question

A bullet of mass 0.02kg is fired from a gun weighing 7.5 kg .if the initial velocity of the bullet is 200 m/ s ,calculate the speed with which the gun recoils.

Answer 1

$velocity \: of \: gun \: = mass \: of \: the \: bullet \: \times velocity \: of \: bullet \div mass \: of \: the \: gun \\ x = 0.02 \times 200 \div 7.5 \\ x = 40 \div 75 \\ x = 0.53m \div s$