7 Two perfectly elastic particles A and masses travelling along the line joining them with velocity 15 m s and 10 m s

Question

7 Two perfectly elastic particles A and masses travelling along the line joining them with velocity 15 m s and 10 m s respectively collide Their velocity in m s after the elastic collision will be respectively 1 0 and 25 3 10 and 15 2 5 and 20 4 20 and 5

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