A 60-Kg (Including the Passenger)sled Is Subject to a Net

Multiple Choice

A 60-kg (including the passenger) sled is subject to a net force of 20 N pushing in the direction of the sled's motion as it is moving over a horizontal surface for a distance of 11 m after having started from rest.At this point the sled is released as it starts down a 10.0° incline.However,the snow is not very deep,and the sled stops after having moved an additional 35 m.What is the work done by friction while the sled is on the incline?

A) -3.6E+3 J
B) -3.8E+3 J
C) -3.4E+3 J
D) -2.0E+4 J