Question

A tow truck pulls a car 5.00km along a horizontal roadway using a cable having tension of 850N (a) how much work does the cable do on the car? if it pulls 35.0° above the horizontal ? (b) How much work does the cable do on the tow truck in both cases(a)? (C) how much work does the gravity do on the car in part (a)?

Answer 1

work= force*distance*cosTheta where theta is the angle between the force and the movement.
a) work= 850*5000*cos35deg
b) same angle, same tension, same distance
c) zero, there is no vertical distance moved