What is the minimum work needed to push a 850 kg car 940 m up along a 9.5 degree incline?

Question

Part A: Ignore Friction

Part B: Assume the effective coefficient of friction retarding the car is 0.20.

Answer 1

a. work= mg*940sin9.5
b. work= work above+mg*mu*distance

Answer 2

what is mu?

Answer 3

The mass times the coefficient of friction