A $4\mathrm{.}6-$mm$-$diameter merry$-$go$-$round is initially turning with a $3\mathrm{.}1$ ss period. It steadily slows down and stops in $30$ ss$.$

Part A

Before slowing, what is the speed of a child on the rim?

Express your answer with the appropriate units.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

vv $=$

nothingnothing

SubmitRequest$$Answer

Part B

How many revolutions does the merry$-$go$-$round make as it stops?

Express your answer in revolutions.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

$$$$ $=$

nothing

revrev