A bus starts from town A

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Kinematics · Kinematics

Problem

A bus starts from town A, travels

60\,\text{km}

to town B and then returns to town A along the same road in a total time of

3\,\text{h}

. Explain why its average speed is non-zero while its average velocity for the whole trip is zero.