SOLUTION: Hillary is driving North on Route 15 with her cruise control set on 55 mph. Her car is 15 feet long. If it takes 0.2 seconds to pass the same type of car in the opposite direction,
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-> SOLUTION: Hillary is driving North on Route 15 with her cruise control set on 55 mph. Her car is 15 feet long. If it takes 0.2 seconds to pass the same type of car in the opposite direction,
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Question 347693: Hillary is driving North on Route 15 with her cruise control set on 55 mph. Her car is 15 feet long. If it takes 0.2 seconds to pass the same type of car in the opposite direction, how fast is the other car traveling?
(r1+r2)t=d Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = the speed of the other car.
Since they travel in opposite directions,
I can consider Hillary's car to be stationary
and the other car to be traveling at the sum
of their speeds, which is
First the nose of the other car has to travel 15 ft
to get side-by-side, and another 15 ft to get
past Hillary's car. (there are 3600 sec /hour and 5280 ft/mile)
The other car's speed is 42.6 mi/hr
