You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of $1\mathrm{.}3m$ above the ground, and it is moving at a speed of $7\mathrm{.}8\frac{m}{s}.$

$($a$)$ How much time does it take for the tennis ball to reach its maximum height?

$s$

$($b$)$ What is the maximum height above the ground that the tennis ball reaches?

From part $($a$),$ we now know the time taken to reach the maximum height, as well as the initial velocity. Which constant acceleration relationship will allow you to finc Be careful of directions and signs. $m$

$($c$)$ When the tennis ball is at a height of $2\mathrm{.}6m$ above the ground, what is its speed?

$\frac{m}{s}$