Question

Determine the speed of train of length 180cm if it crosses a pole in 5 sec.

Answer 1

Speed=distance×time
=180×5=900m/s

Answer 2

Solution:

The speed of the train is 36 cm/s

Explanation:

We have been given that the train crosses a pole in 5 sec and the length of the train is 180 cm.

Since, the pole is a stationary object hence, the distance traveled by the train to cross the pole is equal to the length of the train.

Therefore, we have

Distance = 180 cm

Time = 5 sec

Hence, we have

$\text{Speed }= \frac{\text{Distance}}{\text{Time}}\\\\\text{Speed }=\frac{180}{5}\\\\\text{Speed }=36 \text{ cm/s}=$

Therefore, the speed of the train is 36 cm/s