Physics

Problem

A train travelling at

54\,\text{km/h}

is brought to rest by the brakes in

150\,\text{m}

. Assuming uniform retardation, what is the magnitude of the retardation? a)

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

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

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

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