Question

A train is 180m long. If it runs at a speed of 90km/h,how long will it take to pass an electric pole?

Answer 1

Speed=90km/h
=90×5/18=25m/sec
Distance=180m
Time=Distance/speed
=180/25=7.2sec

Answer 2

Answer:

time= 7.2 sec or 0.002 h.

Step-by-step explanation:

Here, the distance = 180 m

Speed is =90km/h

               =90×5/18

               =25m/sec

so, as we know that:

      time=distance/speed

therefore, time = 180/25

                 time =7.2sec

               OR,

speed = 90 km/h = 90000 m/h

distance = 180 m

so, time=distance/speed

therefore, time = (180/90000) m/h

                 time = 0.002 h