A student standing on the ground throws a ball straight up$.$ The ball leaves the student's hand with a

speed of $11\mathrm{.}0\frac{m}{s}$ when the hand is $2\mathrm{.}30m$ above the ground.

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Solution of Time in the air for a tossed ball.

Part A

How long is the ball in the air before it hits the ground? $($The student moves her hand out of the

way.$)$

Express your answer with the appropriate units.