Question

A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train's acceleration be described?

Answer 1

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Answer 2

We can find the acceleration of the train by using the equation

\(\sf V=U+at\), here, v and u are the final and initial speeds of the train.

10=25+a\(\times\)240

-->a=-0.0625 m/s\(^2\)

The negative sign means that the acceleration is basically acting against the motion i.e it's retardation.