A child, m $=25\mathrm{.}0$ kg$,$ swings from a rope, L $=7\mathrm{.}47$ m$,$ which hangs above water, d $=1\mathrm{.}1$ m$,$ when vertical. The child is h $=7\mathrm{.}9$ m above the water when she begins to swing.

kloccc@clarkson.edu$4$N$89-2$E$-5$B$-42-9723-50793$

$$ Part $($a$)$

Write an expression for the velocity v of the student at the bottom of the swing.

$$ Part $($b$)$

Assume the child lets go at the bottom of the swing. How long does she take to reach the water, t in seconds?

t $=$

$0\mathrm{.}474|$