A train 100 m long meets a man going in the opposite direction at the rate of 5 km/h and passes him in 7.2 seconds. At what rate is the train going.
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The speed of train relative to the man is (100/7.2)m)/s.
As the speed of Man is 5km/h = (5000/3600)m/s in opposite direction Speed of train with respect to ground = (100/7.2)-(50/36) = (450/36)m/s = 45km/h
As the speed of Man is 5km/h = (5000/3600)m/s in opposite direction Speed of train with respect to ground = (100/7.2)-(50/36) = (450/36)m/s = 45km/h
Sakchi01:
Answer is 45 not 55
wait I am checking
Sorry the man is going in opposite direction that's why we have to subtract his speed
Ok sure
We d
???
we add speeds when person goes in opposite directions
No we subtract we add when is same direction
No its written in my book
It's wrong wriiten in your Book think it like if you will run in same direction in that of that body its speed resembles to be slow that actual speed so for the actual speed u have to add your speed and same in vice-versa
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