A toy train covers along a circular track in

MATHEMATICS · Single correct · AP · AP Precalculus · Trigonometric and Polar Functions · Trigonometric and Polar Functions

Problem

A toy train covers

15.7\,\text{m}

along a circular track in

4.0\,\text{s}

, completing exactly one quarter of a revolution. The time period of the train's motion is (a)

12\,\text{s}

(b)

8.0\,\text{s}

(c)

16\,\text{s}

(d)

20\,\text{s}