A child of mass m is released from rest at the top of a
A child of mass m is released from rest at the top of a water slide, at height h= 8.5 meter above the bottom of the slide. Assuming that the slide is frictionless because of the water on it, determine the child speed at the bottom of the slide.
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a ballot box with mass m 60 kilogram slides with speed v 40 ms across a frictionless floor in the positive direction
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