Question

A man fires the bullet of mass m each with a velocity v from a machine gun. If he fires n bullets every second, the reactional force per second on the man will be

Answer 1

The reactional force per second on the man will be equal to actional force by newtons third law of motion..

F = m×a
F = m × (v-u)/t
F = m × (v-0)/1
F = mv