What is the final speed of the crate
A 150-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 410 N. For the first 18 m the floor is frictionless, and for the next 18 m the coefficient of friction is 0.34. What is the final speed of the crate?
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A 70 human sprinter can accelerate from rest to 12 in 3.5 . During the same interval, a 26 greyhound can accelerate from rest to 18 . Compute (a) the change in kinetic energy and (b) the average power output for each.
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A playground merry-go-round of radius R = 1.80 m has a moment of inertia I = 255 kg·m2 and is rotating at 8.0 rev/min about a frictionless vertical axle. Facing the axle, a 26.0 kg child hops onto the merry-go-round and manages to sit down
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