Answer to Q174
A 100m train training at 100m/s needs to clear a track of 100m. How many seconds will it take?
A 100m train wants to clear a track of 100m. When the train travels 100m, it will be sitting perfectly on the track but remember, it needed to clear it. So the train, needs to travel another 100m to completely clear the track.
Total distance travelled = 2 x 100m = 200m
How many seconds will it take the train?
v = d ÷ t
t = d ÷ v
t = 200m ÷ 100m/s
t = 2s
Answer: 2s
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