Question

the speed of a 100 n long train is 144 km/hr then how much time the train takes to cross a electric pole​

Answer 1

Answer:

10/9 sec or 1.1 sec

Step-by-step explanation:

The time taken to cross a pole is the time taken to cross the distance as same as the length of train i.e, 100 m.

Now as the distance units here is in 'meters', change the units of speed from km/hr to m/s. To do that multiply 144 with (15/8) :

144 * (15/8) = 18 * 5 = 90 m/s

Time = Distance/speed

t = 100/90

t = 10/9 sec (or) t = 1.1 sec

Therefore, time taken is 10/9 sec or 1.1 sec

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