Originally Posted by **Tabassum** A car travels at a uniform velocity of 20 m/s for 5s.The brakes are then applied and the car comes to rest with uniform retardation in a further 8 s.How far does the car travel after brakes are applied???? |

you can use the formula $\displaystyle a=\frac{v_1-v_0}{t}$

where $\displaystyle v_0= 20$ and$\displaystyle v_1=0$ since its retardation you will get $\displaystyle a$ as negative. Put these values in the formul

$\displaystyle s=v_o.t + \frac{1}{2}.a.t^2$.