Physics

Problem

Cars A and B move on concentric circular tracks of radii

50\,\text{m}

and

75\,\text{m}

respectively. If the speed of A is

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

and that of B is

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

, the ratio of their centripetal accelerations

a_A : a_B

is a)

5:4

25:24

25:36

24:25