Question

( Pomi)

A train spotter is standing by the side of a railway track, watching a train go by.
He knows that the maximum speed for the line he is standing next to is 22 m/s.
A train passes him. It takes 5.0 seconds to completely pass him.
What is the maximum length of the train?
A
110 m
B
4.4 m
С
27 m
D
22 m

Answer 1

The maximum length of the train is 110 m

Step-by-step explanation:

Speed

It's the rate of change of the distance traveled by a moving object. Given the distance d and the time t it takes to complete it, the speed is calculated as follows:

`\displaystyle v=(d)/(t)`

The train spotter starts seeing the train that moves at v=22 m/s for 5 seconds until it completely passes him.

The maximum length of the train is the distance traveled, which can be calculated by solving the formula for d:

d = vt

d = 22 m/s * 5 s

d = 110 m

The maximum length of the train is 110 m