Question

Rado the dog runs along a railroad. A train that is 250 meters long passes her in 24 seconds. The speed of the train is 25 meters per second. Find out the speed of the dog Rado at which he runs along the rail road.​

Answer 1

Let the speed of the dog be x

Speed of the train = 25m/s

Train length = 250 m

Time Taken = 24 seconds

Relative velocity = Speed of the train - Speed of the dog

= 25m/s - x

Speed = distance/time

25m/s - x = 250m/24s

25 - x = 250/24

600 - 24x = 250

-24x = 250 - 600

-24x = - 350

x = (-350)/(-24)

x = 175/12 m/s or 14.5833 m/s