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
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Answer 1

Inertia — the box tends to continue in a straight line while the truck turns. Because there isn’t enough frictional force to provide the required centripetal force, the box slides toward the side farthest from the curve (in the truck’s frame this is described by a centrifugal pseudo‑force outward).