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

A ballof mass .m. approaches a wall of mass .M. (gt gt m) with speed 4

1.	A ballof mass .m. approaches a wall of mass .M. (gt gt m) with speed 4 m/salong the normal to tha wall. The speed of wall is 1 m/s towards the ball. The speedof the ball after an elactic collision with the wall is
Answer» 5 m/s AWAY from the wall 9 m/s away from the wall 6 m/s away from the wall 3 m/s away from the wall Answer :C