A 125-Kg Crate Slides Along a Horizontal Frictionless Surface at a a Constant

A 12.5-kg crate slides along a horizontal frictionless surface at a constant speed of 4.0 m/s. The crate then slides down a frictionless incline and across a second horizontal surface as shown in the figure.
-What is the speed of the crate when it arrives at the lower surface?

A) 7.7 m/s
B) 8.6 m/s
C) 59 m/s
D) 75 m/s
E) 98 m/s

Correct Answer:

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