You are driving to the grocery store at 20 m/s. You are 110 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.70 s and that your car brakes with constant acceleration.How far are you from the intersection when you begin to apply the brakes?
1 answer
d = 110 - Vo*t = 110 - 20*0.7 = 96 m.