When you see a traffic light turn red, you apply the brakes until you come to a stop. Suppose your initial speed was 12.9 m/s, and you come to rest in 35.0 m. How much time does this take? Assume constant deceleration.

2 answers

What is your question about this problem? I will be happy to critique your thinking. We are not in the habit of doing homework or tests for students.
v=v₀ -at
v=0
0=v₀ -at
t= v₀ /a