Question

(i) State law of conservation of momentum. Prove it for the collision between two objects moving in the same horizontal line with different velocities.
(ii) A bullet of mass 20g is horizontal fired with a horizontal velocity 150ms -1 from pistol of mass 2kg. What is the recoil velocity of the pistol.


plz tell the answer urgent guys plz help​

Answer 1

Answer:

Initial momentum of the system is 0 as it is at rest.

After firing-

MV=mv

⟹V=

M

mv

=

2

0.02×150

⟹V=1.5m/s