Question

Find the work done by a cadet student pushing a 500 kg car in a distance of 39.37 inches.

Answer 1

We can find the work done by the student in pushing the car from the formula:

$$W=Fd.$$

Unfortunately, from the condition of the question we don't know the amount of force that he exerts on the car. Let's assume that he pushes the car with the force of 400 N. Then, we can calculate the work done:

$$W=Fd=400\ N\cdot39.37\ in\cdot\dfrac{0.0254\ m}{1\ in}=400\ J.$$