Question

A shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25° downward from the horizontal. Find the work done by the shopper on the cart as the shopper moves along a 50.0 m length of aisle.

Answer 1

The work is

$$W=Fd\cos\theta=35·50·\cos25°=1568\text{ J}.$$