Physicsmedium · Past Paper
A car travels 30 km at a uniform speed of 40 km/h and the next 30 km at a uniform speed of 20 km/h. Find its average speed.
A30 km/h
B26.67 km/h
C35 km/h
D25 km/h
✓ Correct Answer: B — 26.67 km/h
t1 = 30/40 = 0.75h, t2 = 30/20 = 1.5h. Total time = 2.25h. Avg speed = 60/2.25 = 26.67 km/h.
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