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OpenStudy (anonymous):

A particle of mass m and velocity u1 makes a head-on collision with another particle of mass 2m at rest. if the coefficient of restitution is such to make the loss of total kinetic energy a maximum,what are the velocites v1 and v2 after the collision?

OpenStudy (anonymous):

Maximum KE is lost when the coefficient of restitution is zero. The their relative velocity on separation is zero, they move together. Therefore, v1=v2. Then, apply conservation of linear momentum and you'll get your answer.

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