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A. What is the kinetic energy of the crate as it slides on the upper surface?

B. While the crate slides along the upper surface, how much gravitational potential energy does it have compared to what it would have on the lower surface?

C. What is the speed of the crate when it arrives at the lower surface?

D. What is the kinetic energy of t he crate as it slides on the lower surface?

E. What minimum coefficient of kinetic friction is required to bring the crate to a stop over a distance of 5.0 m along the lower surface?