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A driver applies brakes on seeing a traffic signal 400m ahead. At the time of applying the brakes, the vehicle was moving with 15m/s and retarding with 0.3m/s^2. What is the distance of the vehicle from the traffic light after 1 minute?

x = 15(60) - 1/2(0.3)(60)^2

x = 360m

Therefore the distance from the traffic light is 40m. Correct?

My book says the answer is 25m. Is it wrong? Any help will be appreciated.Thanks!

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# Homework Help: Kinematics question on brakes

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