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A ball of mass .m. approaches a wall of...

A ball of mass .m. approaches a wall of mass .M. `(gt gt m)` with speed 4 m/s along the normal to tha wall. The speed of wall is 1 m/s towards the ball. The speed of the ball after an elactic collision with the wall is

A

5 m/s away from the wall

B

9 m/s away from the wall

C

6 m/s away from the wall

D

3 m/s away from the wall

Text Solution

Verified by Experts

The correct Answer is:
C
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