Question

A train moving at speed of 90 km/hr crosses a pole in 7 seconds. Find the length of the train​

Answer 1

Answer:

If the speed of the train is 90 km/ hr and it crosses the pole in 7 seconds, then the length of the train is 175m

Step-by-step explanation:

Given

Speed of train = 90km/hr = 

$90*\frac{5}{18} m/s\\\\= 5*5\\\\= 25 m/s$

That is the train travels 25 m in 1 second

Length of the train = distance traveled in 7 seconds

25m can be traveled in 1 second

Distance traveled in 7 seconds = 25*7 = 175m

Therefore, the length of the train is 175 m