Answer to Question #131313 in Physics for Jackie

Question

A car moving at 24 m/s skids to a stop in a distance of 30. meters. How long (in seconds) did it take for the car to come to a stop?

Answer 1

$S=\frac{v^2-v_0^2}{2a}\to a=\frac{v_0^2}{2S}$

$v=v_0-at\to t=\frac{v_0}{a}=\frac{v_0\cdot2S}{v_0^2}=\frac{2S}{v_0}=\frac{2\cdot30}{24}=2.5(s)$