An object is initially at rest relative to a truck that is moving west at

PHYSICS · Subjective · CBSE · Physics · Motion in a Straight Line · Motion in a Straight Line

Problem

12\,\text{m/s}

. After

6.0\,\text{s}

, the object’s speed relative to the truck is

30\,\text{m/s}

westward under constant acceleration. Determine the magnitude of the object’s acceleration as measured (a) from the truck and (b) from the ground.