Question 274100
Each vehicle has to travel half that distance to meet.  Therefore, we want the time it takes for a car moving at 30mph to travel 100 ft.
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distance formula:
d = rt
solving for t:
t = d/r
.
First, convert miles-per-hour to feet-per-second
30 mph * 5280 feet/mile = 158400 feet per second
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t = 100 feet / 158400 feet per second
t = .00063 seconds