A ball strikes an identical ball with velocity 50 m/s and after the collision which is perfectly elastic it is found to move with velocity 30 m/s . Show that the two balls move at right angles to each other after collision .

A ball strikes an identical ball with velocity 50 m/s and after the co

1.	A ball strikes an identical ball with velocity 50 m/s and after the collision which is perfectly elastic it is found to move with velocity 30 m/s . Show that the two balls move at right angles to each other after collision .
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