A car travels round a horizontal circular track of radius at a constant speed of

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A car travels round a horizontal circular track of radius

50\,\text{m}

at a constant speed of

10\,\text{m s}^{-1}

. The magnitude of its acceleration is (a)

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

(b)

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

(c)

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

(d)

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