Question

a train speed is 60km/hour.if the ditance of train is 500 miter how many time the train pass a light Pole​

Answer 1

TIME IN SECONDS

• Speed of the train, v = 60 km/hr.

$1 \: \dfrac{ km}{hr} = \dfrac{5}{18} \: \dfrac{m}{s} \\ \\ 60 \: \dfrac{ km}{hr} =60 \times \dfrac{5}{18} \: \dfrac{m}{s} \\ \\ = \dfrac{60}{18} \times 5 \: \dfrac{m}{s} \\ \\ = \frac{10}{3} \times 5 \: \dfrac{m}{s} \\ \\ = 3.33 \times 5\: \dfrac{m}{s} \\ \\ v= 16.65 \: \dfrac{m}{s}$

• Distance of train, s = 500 m

• Let the time taken by the train to pass the light pole be t.

Speed = Distance / Time

$v = \frac{d}{t} \\ \\ 16.65 = \frac{500}{t} \\ \\ t = \frac{ 500 }{16.65}\\ \\ t = 30.03 \: seconds$

The time taken by the train to pass the light pole is 30.03 s