Question

A gun of mass 0.1kg has a bullet of mass 0.1kg,the bullet laves the piston when fired at a velocity of 200m/s. Find the final velocity.
(a) 20m/s (b) 23m/s (c) 30m/s (d) 45m/s (e) 15 m/s

Please kindly help me with the questions I posted. Thank you

8 years ago