Answer:
Approximately
.
Step-by-step explanation:
The following SUVAT equation relates displacement
to initial velocity
, final velocity
, and acceleration
:
.
In this question:
- Final velocity:
since the train has completed stopped. - Initial velocity:
, which needs to be converted into the standard unit of meters per second. - Acceleration:
, which is negative since the train is slowing down.
Apply unit conversion and ensure that all quantities are measured in standard units:
.
Substitute the value of
,
, and
into the expression for
to obtain:
.