Question

A car is moving at a rate of 72km/hr. How far does the bus move when it stops after 4 seconds?

Answer 1

Let the velocity of the car be $v = 72km/hr = 20m/s$. By definition, the velocity is:

$$v = \dfrac{d}{t}$$

where $d$ is the distance covered in $t = 4s$. THus, obtain:

$$d = vt = 20m/s\cdot 4s = 80m$$

Answer. 80 m.