Current location - Loan Platform Complete Network - Big data management - A and B are walking in opposite directions on a sidewalk parallel to a railroad track. A train passes by A at a constant speed in 15 seconds.
A and B are walking in opposite directions on a sidewalk parallel to a railroad track. A train passes by A at a constant speed in 15 seconds.
Set the speed of the train to be x km/h, then
15(x+3.6)=17(x-3.6)
Solve: x=57.6
The train's speed is 57.6 km/h,
So the train's length is 15/3600*(x+3.6)=255 meters.