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Question: A sled of mass m is being pulled horizontally by a constant upward force of magnitude F that makes an angle theta with the direction of motion. The coefficient of kinetic friction is mu_k. The average velocity of the sled is v_avg.

A) Find the average power P_avg created by force F.Express your answer in terms of F, theta, and v_avg.

A sled is being pulled along a horizontal surface by a horizontal force F_vec of magnitude 600 N. Starting from rest, the sled speeds up with acceleration 0.08 s^2 for 1 minute.

B) Find the average power P_avg created by force F_vec.

C) Find the instantaneous power P created by force F_vec at t = 10s.

D) Find the instantaneous power P created by the normal force at t = 10 s. The magnitude of the acceleration due to gravity is g=9.8\;\rm m/s^2.

Express your answer in watts to three significant figures.

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