A car of mass 1.0×103 kg
is being dragged by a wire at a constant speed of 18.m⋅s−1
up a road that is inclined at an angle of 8.0∘
from the horizontal. The wheels are locked and the coefficient of dynamic friction between the wheels and the road is 0.23
.

b. State the rate of change of the momentum of the car. (1)

c. By considering the forces on the car, determine the tension in the wire. (4)