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A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular...

A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.558 rev/s. A 59.4 kg person running tangential to the rim of the merry-go-round at 3.58 m/s jumps onto its rim and holds on. Before jumping on the merry-go-round, the person was moving in the same direction as the merry-go-round's rim. (a) Does the kinetic energy of the system increase, decrease, or stay the same when the person jumps on the merry-go-round? increase decrease stay the same (b) Calculate the initial and final kinetic energies for this system.

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