# An object moves in a straight line at 30 (km)/(hr) for 5 minutes. What will be the distance it has travelled at the end of this motion?

Jan 22, 2017

Since 5 minutes is $\frac{1}{12}$ of an hour, the distance is $d = \left(30 \frac{k m}{h r}\right) \times \left(\frac{1}{12} h r\right) = 2.5 k m$

#### Explanation:

By definition

$v e l o c i t y = \frac{\mathrm{di} s p l a c e m e n t}{t i m e}$

So, displacement (which is the same as distance in this situation of straight line motion) is

$\mathrm{di} s p l a c e m e n t = v e l o c i t y \times t i m e$