What is the two-second gap, in metres, behind the vehicle ahead when driving at 126 km/h?
Answer and explanation
Correct answer: C. 70 m
- Step 1: Speed in m/s = 126 ÷ 3.6 = 35 m/s. Step 2. Two seconds cover 70 m. Answer: 70 m. Why not the others: 35 m results from having allowed only one second. 105 m results from having allowed three seconds. 63 m results from having taken half of the speed in km/h.
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