Physics

Problem

A playground merry-go-round makes

0.40

revolutions per second. What is the magnitude of the linear speed of a child standing

2.5\,\text{m}

from the center? a)

3.1\,\text{m}\!/\!\text{s}

12.6\,\text{m}\!/\!\text{s}

6.3\,\text{m}\!/\!\text{s}

1.0\,\text{m}\!/\!\text{s}