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

A ball of mass 'm' approaches a wall of mass 'M' (gt gtm) with speed 4

1.	A ball of mass 'm' approaches a wall of mass 'M' (gt gtm) with speed 4m/s along the normal to the wall. The speed of wall is 1m/s towards the ball. The speed of the ball after an elastic collision with the wall is
Answer» <html><body><p>5m/s <a href="https://interviewquestions.tuteehub.com/tag/away-386546" style="font-weight:bold;" target="_blank" title="Click to know more about AWAY">AWAY</a> from the wall<br/>9m/s away from the wall<br/>6m/s away from the wall<br/>3m/s away from the wall</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html>