A car traveling at begins to brake with a constant acceleration and comes to rest…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A car traveling at

25\,\text{m/s}

begins to brake with a constant acceleration and comes to rest after moving

120\,\text{m}

. Approximately how much time elapses from the instant the brakes are applied until the car stops? (a)

4.8\ \text{s}

(b)

12\ \text{s}

(c)

9.6\ \text{s}

(d)

5.1\ \text{s}