You are driving at 90 miles/hour. You suddenly see a Police car on the shoulder at 100...

You are driving at 90 miles/hour. You suddenly see a Police car on the shoulder at 100 meters. How hard you need to hit the break (what should be your deceleration) to reduce you speed from 90 mi/h to 60 mil/s at the time you reach to the officer? Your reaction time, before stepping on the brake is 0.50 s 1 mile/h = 0.45 m/s

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genius_generous answered 2 years ago

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