Question

Two cars $C_1$ and $C_2$ are moving in the same direction on a straight single lane road with constant velocities $12m/s$ and $10m/s$, respectively. When the separation between the two was $200m,C_2$ started accelerating to avoid collision. The minimum acceleration (in $cm/s^2$ ) of car $C_2$ so that they don't collide, is

Answer 1

Answer: 1

$v^2=u^2-2as$
$0=4-2\times a\times 200$

$a=\frac{1}{100}m/s^2$
$a=1cm/s^2$