Question 138876This question is from textbook
: A car is traveling on a road that is perpendicular to a railroad track. When the car is 30 meters from the crossing, the car's new collision detector warns the driver that there is a train 50 meteres from the car and heading toward the same crossing. How far is the train from the crossing?
This question is from textbook
Answer by stanbon(75887)   (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 the car is 30 meters from the crossing, the car's new collision detector warns the driver that there is a train 50 meteres from the car and heading toward the same crossing. How far is the train from the crossing?
---------------
Draw the picture.
You should have a right triangle with hypotenuse 50 meters
and a side of 30 meters.
The other side is the distance of the train from the intersection.
Call the missing side "x".
EQUATION:
50^2 = 30^2 + x^2
x = sqrt[50^2-30^2]
x = sqrt[2500-900]
x = sqrt[1600]
x = 40 meters (the distance the train is from the crossing)
=============
Cheers,
Stan H.
|
|
|
