Physics

Problem

A car is standing

200 \text{ m}

behind a bus, which is also at rest. The two start moving at the same instant but with different forward accelerations. The bus has acceleration

2 \text{ m/s}^2

and the car has acceleration

4 \text{ m/s}^2

. After how much time will the car catch up with the bus? a.

\sqrt{110} \text{ s}

\sqrt{120} \text{ s}

10\sqrt{2} \text{ s}

15 \text{ s}