Question

The length of a train is 150m.If the speed of the train is 60km/h,then in how much time will the train cross the pole of telegraph?

Answer 1

Given:

• Distance =150m
• Speed = 60km/h

To Find:

• Time = ?

Solution:

Given,

• D = 150m
• S = 60km/h

$\sf \: speed = 60 \frac{km}{hr} \\ \sf= 60 \times \frac{5}{18} \\ \sf = \frac{50}{3} \frac{m}{s}$

$\sf \: time \: taken \: to \: cross \: the \: pole = \frac{length \: of \: the \: train}{speed \: of \: the \: train} \\ \sf = \frac{150 \times 3}{50} \\ \\ \sf= 9 \: seconds$

Therefore, time taken to cross the pole is 9 seconds.

Answer 2

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