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Solve in symbols Two particles of the same mass m approach each other at a right...

Solve in symbols

Two particles of the same mass m approach each other at a right angle, both travelling at a speed v. They undergo a perfectly elastic collision. Show that they must recoil such that their final velocities are also at a right angle with respect to each other. Use vectors and the conservation lawas to show that v1f*v2f=0.

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