Question

A body of mass m strikes against a wall with a velocity u and rebounds with the same velocity. Its change in momentum is

Answer 1

Answer:

so it's change in momentum is equal..

Answer 2

Answer:

2MV

Explanation:

Hey there,

Given,

Mass = M

Initial velocity = V

Final velocity = -V

(Negative sign indicates the change in direction)

Final momentum = mass*final velocity = -MV

Change in momentum

= final momentum - initial momentum

= -MV - MV

= -2MV