A driver at 126 km/h looks away from the road for 2 seconds. How many metres does the car travel in that time?
Answer and explanation
Correct answer: D. 70 m
- Step 1: Speed in m/s = 126 ÷ 3.6 = 35 m/s. Step 2. Distance = 35 × 2 = 70 m. Answer: 70 m. Why not the others: 252 m results from having treated km/h as m/s. 35 m results from having counted only one second. 105 m results from having added an extra second.
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