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Posted by Em on Thursday, September 8, 2011 at 9:39am.

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

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.

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

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