What is the two-second gap, in metres, behind the vehicle ahead when driving at 36 km/h?
Answer and explanation
Correct answer: C. 20 m
- Step 1: Speed in m/s = 36 ÷ 3.6 = 10 m/s. Step 2. Two seconds cover 20 m. Answer: 20 m. Why not the others: 10 m results from having allowed only one second. 30 m results from having allowed three seconds. 18 m results from having taken half of the speed in km/h.
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