Question 610628
If a vehicle is traveling at 67 mph and another vehicle wants to catch the vehicle traveling at 67 mph within one mile, how fast would the 2nd vehicle have to travel in order to catch the 1st vehicle if the 1st vehicle was 1/2 mile away at the time the 2nd vehicle began excelleration? 
-----------------
Within one mile of what?  The position of the lead vehicle?
Or the position of the chase vehicle?