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You drive to a store and back in half an hour, 6 km total. Your average speed is 12 km/h and your average velocity is:
A6 km/h
B3 km/h
C0 km/h
D12 km/h
Answer & Solution
Correct answer: C. 0 km/h
1. Displacement for a round trip is zero.
2. So average velocity is zero.
3. Average speed is not the magnitude of average velocity.
_Source: OpenStax College Physics for AP Courses 2e, Chapter 2, Kinematics (CC BY 4.0)._
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