How to find the length of the train when the speed of train and the man and the time through which it passes by him is given?
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Let l be the length of the train. Then:
l+90/30=V
l/15=V
l+90/30=l/15
30l=15l+1350
15l=1350
l=90
If the length of the train is 90m, and it passes a man in 15 seconds, then its’ speed is 90/15, or 6 m/s
l+90/30=V
l/15=V
l+90/30=l/15
30l=15l+1350
15l=1350
l=90
If the length of the train is 90m, and it passes a man in 15 seconds, then its’ speed is 90/15, or 6 m/s
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