In what time will a train 100 m long cross an electric pole, if its speed is 144 km/h?

Correct option is C

Given:

Length of the train = 100 $$\, \text{m}$$​​

Speed of the train = 144 $$\, \text{km/h}$$​​

Formula Used:

Time =$$\frac{\text{Distance}}{\text{Speed}}$$​​

Solution:

First, convert the speed from km/h to m/second

​$$144 \, \text{km/h} = \frac{144 \times 1000}{3600} = 40 \, \text{m/s}$$​​

Now, using the formula:

​$$Time = \frac{100 \, \text{m}}{40 \, \text{m/s}} = 2.5 \, \text{seconds}$$​​

Therefore, the train will cross the electric pole in 2.5 seconds.