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07.1 A 2.00kg mass is initially at rest on the end of a spring that is...

07.1

A 2.00kg mass is initially at rest on the end of a spring that is compressed by 40.0cm from its equilibrium position. The spring has spring constant 800 N/m. This mass is released and the

mass shoots away from the spring on a frictionless, horizontal surface. It then hits a 3.00kg mass, and the two masses stick together and slide up a rough-surface hill (with friction) on the other side to a vertical height of 30.0cm.

(a) What was the speed of the two masses right after their collision?

(b) How much energy was lost during the collision, and much how energy was lost to friction?

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