You are driving to the grocery store at 18 m/s. You are 120 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.50 s and that your car brakes with constant acceleration.

What magnitude braking acceleration will bring you to a stop exactly at the intersection?

Question

Amina Kelley

3 September, 16:25

+2

Answers (1)

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Ruben Cochran · Answer 1

11.64225 m

Explanation:A = 45 m/s - 15m/s / 6s

A = 5m/s^2

You are driving to the grocery store at 18 m/s. You are 120 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.50 s and that your car brakes with constant acceleration.What magnitude braking acceleration will bring you to a stop exactly at the intersection?