Home / Unit-3 Dynamics-1 / Question
MCQ
A bullet of mass 10 g is fired from a gun of mass 4 kg with a velocity of 400 m/s. What is the recoil velocity of the gun?
Unit-3 Dynamics-1
A 0.25 m/s
B 1 m/s
C 4 m/s
D 40 m/s
Explanation

By conservation of momentum, (0.01 x 400)/4 = 1 m/s in the backward direction.

Related MCQs

A 2 kg object moving at 6 m/s receives an impulse of 8 N s in the opposite direction. What is its final velocity?
Unit-3 Dynamics-1 View
Lubricants such as oil and grease are used to:
Unit-3 Dynamics-1 View
You push a heavy box but it does not move. The friction acting on it is:
Unit-3 Dynamics-1 View
Friction is considered helpful because it helps in:
Unit-3 Dynamics-1 View
A force of 25 N acts on a body of mass 5 kg. What is its acceleration?
Unit-3 Dynamics-1 View
What is the momentum of a body of mass 5 kg moving with a velocity of 2 m/s?
Unit-3 Dynamics-1 View