Asked by Laura

A tow truck pulls a car from rest onto a level road. The tow truck exerts a horizontal force of 1500 N on the car. The frictional force on the car is 810 N. Calculate the work done by each of the following forces on the car as the car moves forward 12 m:
(a) the force of the tow truck on the car
(b) the force of friction
(c) the normal force
(d) the force of gravity

I just need help with c and d because I don't understand how you can find the fg and FN without knowing the mass of the car

Answers

Answered by Scott
the forces in c and d are normal (perpendicular) to the direction of motion of the car

they do no work
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