Answer to Question #345307 in Mechanics | Relativity for denden

Question

A car moving with a velocity of 54 km/h accelerate uniformly at the rate of 2 m/s². Calculate the time taken to cover this distance

Answer 1

$$a=\frac{\Delta v}{\Delta t}$$

$$\Delta t=\frac{\Delta v}{a}=\frac{(72-54)\div 3.6\:\rm m/s}{2\:\rm m/s^2}=2.5\:\rm s$$