SOLUTION: A car is traveling on a road that is perpendicular to a railroad track when a car is 30 meters from the crossing, the cars new collison detector warns the driver that there is a tr

Question 194250: A car is traveling on a road that is perpendicular to a railroad track when a car is 30 meters from the crossing, the cars new collison detector warns the driver that there is a train 50 meters from the car and heading toward the same crossing. how far is the train from the crossing?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A car is traveling on a road that is perpendicular to a railroad track
when a car is 30 meters from the crossing, the cars new collison detector
warns the driver that there is a train 50 meters from the car and heading
toward the same crossing. how far is the train from the crossing?
:
The this is a pythag problem a^2 + b^2 = c^2
Let a = 30 (car from the crossing)
Let c = 50 (car to oncoming train)
find b (train to crossing)
:
30^2 + b^2 = 50^2
900 + b^2 = 2500
b^2 = 2500 - 900
b^2 = 1600
b =
b = 40 meter, train is from the crossing
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