Answer to Question #161446 in Molecular Physics | Thermodynamics for Mary brown

Question

A car is driving at 25 m/s and sees a red light. The car comes to stop over a distance of 100 m. What is their acceleration? Time?

Answer 1

$v=\sqrt{2as}, ~a=\frac{v^2}{2s}=3.125~\frac{m}{s^2},$

$t=\frac va=8~s.$