A tow truck pulls a car 5 km along a horizontal road, using a cable whose tension is 850 N. Consider that the car is stuck and therefore the friction force exerted by the pavement is 250 N.

a) How much work does the cable and the pavement do on the car if the cable pulls it horizontally?

b) How much work do the cable and the pavement do on the car if the cable pulls on it at an angle of 35 degrees above the horizontal?

c) If the car has a mass of 800 kg and is initially at rest, what is its speed after traveling 100 m?