If a car is speeding down a road at 40 (mph), how long is the stopping distance compared to the stopping distance if the driver were going at the posted speed limit of 25 ?

Express your answer as a multiple of the stopping distance at 25

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  1. V1^2 / V2^2 = (40)^2 / (25)^2 = 2.56.
    Therefore, the stopping distance at 40
    mph is 2.56 times the stopping distance
    at 25mph.

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  2. how far would the car travel after slamming on the breales if it was initially moving at 75 mph?

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