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A ball of mass 10 kg is lying at rest on a horizontal frictionless surface and another ball of mass 10 kg moving with velocity 5 m/s collides perfectly elastically and obliquely with ball at rest. If velocity of balls are v1 and v2 just after collision, then findv1 .v2 .

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Detailed Solution

After collision the two balls move right angle to each other, i.e., v1→. v2→=0

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A ball of mass 10 kg is lying at rest on a horizontal frictionless surface and another ball of mass 10 kg moving with velocity 5 m/s collides perfectly elastically and obliquely with ball at rest. If velocity of balls are v1 and v2 just after collision, then findv1 .v2 .