Question

A car traveling at 11.6 meters per second crashes into a barrier and stops at 0.287 meters. How long does it take the car to stop. Include units in your answers. Must be in 3 significant digits.

Answer 1

The speed of car can be expressed as,

$v=\frac{d}{t}$

Plug in the known values,

$\begin{gathered} 11.6\text{ m/s=}\frac{0.287\text{ m}}{t} \\ t=\frac{0.287\text{ m}}{11.6\text{ m/s}} \\ \approx0.0247\text{ s} \end{gathered}$

Thus, the time taken by car to stop is 0.0247 s.