Question

A train running at the speed of 60km/hr crosses a pole in 9 seconds.what is the length of the train?

Answer 1

                                               ☺☺☺

 The train crosses a pole in 9 sec with the speed of 60 km/h.Since the thickness of a pole is so less to cross the pole in 9 sec it must have just passed its body.So, the distance will be equal to the distance traveled by train in  9 sec.

Given,

Speed = 60 km/h = 60 * 5 m / 18 s = 300 m / 18 s  =  50/3 *  m/s

Time = 9 sec.

Distance covered = Speed * time

                             = 50 x 9 m / 3

                             = 50 x 3 m

                             = 150 m.

So, the length of train is 150 meters.

                        
                                                          ☺☺☺

Answer 2

Answer:

150 m

Step-by-step explanation:

Formula: Distance = Speed * Time

Let, Length of Train = x m

Speed = 60 km/h

           = 60 * (5/18) m/s

           = 50/3 m/s

Time = 9 s

So,

Distance/Time = Speed

or, x / 9 = 50 / 3

or, x = 150

Length = 150 m