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A block of mass m1 is traveling to the right with a velocity of v1i. A...

A block of mass m1 is traveling to the right with a velocity of v1i. A block of mass m2 is traveling to the left at v2i. Both are on a frictionless, flat surface. Let the speed v2i = (1/2)v1i and m2 = 3m1.

The two blocks collide elastically.

(1) What is the final velocity of block m1 (in terms of v1,i)?

(2) What is the final velocity of block m2 (in terms of v1,i)?

(3) What is the change in the kinetic energy of block m1 (in terms of m1 and v1,i)?

(4) What is the change in the kinetic energy of block m2 (in terms of m1 and v1,i)?

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