A car travels at a constant speed of around a circular track of radius

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

Problem

A car travels at a constant speed of

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

around a circular track of radius

50\,\text{m}

. Calculate the magnitude of its centripetal acceleration. (a)

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

(b)

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

(c)

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

(d)

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