Block 1, of mass m1, moves across a frictionless surface with speed ui. It colli

Question

Block 1, of mass m1, moves across a frictionless surface with speed ui. It collides elastically with block 2, of mass m2, which is at rest (vi=O).

Part A

This collision is elastic. What quantities, if any, are conserved in this collision?

Part B

What is the final speed vf of block 1? Express vf in terms of m1, m2, and ui.

Part C

What is the final speed vf of block 2? Express vf in terms of m1, m2, and ui.

Explanation / Answer

A>energy,momentum will b ocnserved B>m1Vf+m2Uf=m1ui ui=vf-uf so Vf=ui(m1-m2)/(m1+m2) (block 1) C>Vf=2m1ui/(m1+m2) (block2)

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