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

Multiple Choice

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.
-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?

A) 80 J
B) 100 J
C) 240 J
D) 370 J
E) 490 J