Question 953391: A car traveling at 83 MPH how fast would another car have to be traveling to catch him in 1 mile from a complete stop? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! You have to know the acceleration of the 2nd car.
Then you have to assume it's constant, which might not be a valid assumption.
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When you pass a cop car that's parked and he accelerates in pursuit, the time spent accelerating and to what speed are crucial factors.