Two objects of mass M and 5M are at rest on a horizontal,

Chapter 8, Problem Q8.25

(choose chapter or problem)

Two objects of mass M and 5M are at rest on a horizontal, frictionless table with a compressed spring of negligible mass between them. When the spring is released, which of the following statements are true? (a) The two objects receive equal magnitudes of momentum. (b) The two objects receive equal amounts of kinetic energy from the spring. (c) The heavier object gains more kinetic energy than the lighter object. (d) The lighter object gains more kinetic energy than the heavier object. Explain your reasoning in each case.

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