SOLUTION: A train moving 50 miles per hour meets and passes a train moving 50 miles per hour in the opposite direction. A passenger in the first train sees the second train pass in 4 second
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Question 290434: A train moving 50 miles per hour meets and passes a train moving 50 miles per hour in the opposite direction. A passenger in the first train sees the second train pass in 4 seconds. How long is the second train?
Give the exact answer in the form of a fraction.
_____ of a mile long
thanks for the help Answer by toidayma(44) (Show Source):
You can put this solution on YOUR website! Since the two trains are moving in opposite directions, the passenger on a train will see the other train moving at the speed of (sum of the two trains' speed) or 50 + 50 = 100(mph). Since he sees the other train passing in 4 seconds, which means that in 4 seconds or 4/3600 of an hour, the second train moves for a distance of 100* 4/3600 (mile) or 1/9 mile.
So 1/9 is what you need to fill in the blank.
