Question

A train is moving with a speed of $120km/h$. How much distance will it cover in $30$ seconds?

• A. 2.5 km
• B. 2 km
• C. 1.5 km
• D. 1 km

Answer 1

Answer: (D)

Step 1: Given that:

Speed of the train($v$) = $120km{h}^{-1}$

Given time($t$ )= $30sec$ = $\frac{30}{60\times 60}hr=\frac{1}{120}hr$

Step 2: Calculation of distance travelled by train:

Distance= speed$\times$ time

Therefore,

The distance travelled by the train in given time will be:

$d=120km{h}^{-1}\times \frac{1}{120}hr$

$d=1km$

Thus,

Option d) 1km is the correct option.