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 gravity inertia centripetal forcecentrifugal force.

Answer : The movement of the box is a result of the centrifugal force.

Explanation :

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 centrifugal force.

It is a pseudo force that acts on an object when viewed from the rotating frame of reference. It acts radially outwards.

So, the correct option is (d) " centrifugal force ".

inertia

Explanation:

A body is has a property - inertia due to its mass. A body resists any change in its state of rest or motion due to inertia. This is also the Newton's first law of motion.

When a box is kept in a moving truck, it gains the speed of the truck once in motion. When the moves round in a curve, the box due to inertia keeps moving straight and resists change in its motion due to inertia and slides to the side in the opposite direction of the motion of the truck.