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An object with a mass of 47.3 g is moving uniformly with a velocity of 39.9...

An object with a mass of 47.3 g is moving uniformly with a velocity of 39.9 m/s along the positive x-axis. A second object, of mass 36.0 g, is moving at +8.9 m/s along the same line, in front of the first mass.

a) Using the usual sign conventions, what is the velocity of the centre-of-mass of the two objects?

b) What is the velocity of the first particle, in the zero momentum frame, after an elastic collision?

c) Using your answer from the previous question, determine the velocity in the laboratory frame, of the first particle after an elastic collision.

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