Question

As a truck rounds a curve, a box in the bed of the truck slides to the side farthest from the center of the curve. This movement of the box is a result of

Answer 1

The correct answer is

centrifugal force.

Keep in mind, however, that centrifugal force is an apparent force. In fact, the truck moves by circular motion in the curve, and the frictional force on the wheels provides the centripetal force that keeps the truck in circular motion. However, the box inside the truck keeps its initial linear motion for inertia, moving towars the side of the truck farthest from the centre of the curve. Therefore we say that there is an apparent force that seems to move the box towards "outside", and we call this force centrifugal force.