Answer:
2551.02 m
Step-by-step explanation:
Given that, the mass of a locomotive is,

coefficient of friction for steel,

Velocity of the locomotive is

By conservation of energy it can be written as:

Here, E is the energy because of friction.
Now,

Here, m is the mass, v is the velocity of an object.
Now energy of the friction can be written as,

Here,
is the coefficient of friction , m is the mass and g is the acceleration due to gravity.
Therefore

Substitute all the variables.

The distance traveled by the locomotive ball before stopping is 2551.02 m