You are traveling along an interstate highway at 32.0 m/s (about 72 mph) when a

Question

You are traveling along an interstate highway at 32.0 m/s (about 72 mph) when a truck stops suddenly in front of you. You immediately apply your brakes and cut your speed in half after 6.0 s.
(a) What was your acceleration, assuming it was constant?


m/s2
What is the change in velocity in the time interval described? Use the definition of the average acceleration to calculate the average acceleration over that time interval. Your response differs from the correct answer by more than 10%. Double check your calculations.
(b) How long did it take you to stop from the time you started to apply the brakes?


s
Your response differs from the correct answer by more than 10%. Double check your calculations.
(c) What was your stopping distance?


m
Your response differs from the correct answer by more than 10%. Double check your calculations.

Explanation / Answer

a. -2.667 m/s^2 b. t=12 s c. s=191.976 m

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