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A 150.0 kg cart rides down a set of tracks on four solid steel wheels, each...

A 150.0 kg cart rides down a set of tracks on four solid steel wheels, each with radius 20.0 cm and mass 45.0 kg. The tracks slope downward at an angle of 25 ∘∘ to the horizontal. If the cart is released from rest a distance of 28.0 mm from the bottom of the track (measured along the slope), how fast will it be moving when it reaches the bottom? Assume that the wheels roll without slipping and that there is no energy loss due to friction.

Express your answer in meters per second to two significant figures.

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