Question

Two people are pushing their stalled car up a hill with an incline of 4.20°. They are pushing parallel to the surface of the hill. The car's mass is 954 kg. What is the combined force they must apply to keep the car moving at a constant speed up the hill? Ignore the forces of friction and air resistance.

Answer 1

they must counteract gravity to keep a uniform velocity or keep the car stationary [same thing, really]

so, resolve the force of the car down the hill. 😀