Physics

Problem

A passenger train leaves a station with a constant acceleration. a. (a) Its initial speed is

54\,\text{km/h}

. Convert this speed into

\text{m/s}

. b. (b) The train accelerates at

0.5\,\text{m/s}^2

for

30\,\text{s}

. Calculate its final speed in both

\text{m/s}

and

\text{km/h}

. c. (c) Find the distance travelled by the train during the

30\,\text{s}

of acceleration. d. (d) Briefly comment on whether an acceleration of

0.5\,\text{m/s}^2

is reasonable for a passenger train, giving one reason for your answer.