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A 3.2 kg box, starting from rest, is pushed up a ramp by a 15 N...

A 3.2 kg box, starting from rest, is pushed up a ramp by a 15 N force parallel to the ramp. The ramp is 2.5 m long and tilted at 17°. The speed of the box at the top of the ramp is 0.85 m/s. Consider the system to be the box + ramp + Earth.

A. Sketch before and after diagrams as well as a free body diagram for the box.

B. How much work does the force do on the system?

C. What is the change of kinetic energy of the system?

D. What is the change of gravitational potential energy of the system?

E. What is the change in the thermal energy of the system?

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