Physics

Problem

A car travelling at

72\,\text{km h}^{-1}

is brought to rest in

100\,\text{m}

with uniform deceleration. Determine the magnitude of its deceleration. a)

4\,\text{m s}^{-2}

1.6\,\text{m s}^{-2}

2\,\text{m s}^{-2}

2.9\,\text{m s}^{-2}