Physicshard · Past Paper
A car travels half of the distance at speed v1 and the other half at speed v2. The average speed is:
A(v1 + v2) / 2
B2v1v2 / (v1 + v2)
C√(v1v2)
Dv1v2
✓ Correct Answer: B — 2v1v2 / (v1 + v2)
The average speed for equal distances is the harmonic mean of the speeds.
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