Question

A bullet of mass 20 g is horizontally fired with a velocity of one 50 m/s from a piston of mass 2 Kg.what is the recoil velocity of the pistol??

Answer 1

ans should be 5 m/s.
Easy formula -

recoil velocity = (m/M)×v

here,
M= mass of gun
m= mass of bullet
v= speed of bullet

by using this formula u will get easy answer.