A tennis player tosses a tennis ball straight up and then catches it after $1\mathrm{.}98s$ at the same height as the point of release.

$($a$)$ What is the acceleration of the ball while it is in flight?

magnitude

$\frac{m}{s^2}$

direction

$($b$)$ What is the velocity of the ball when it reaches its maximum height?

magnitude

$\frac{n}{s}$

direction

$($c$)$ Find the initial velocity of the ball.

$\frac{m}{s}$ upward

$($d$)$ Find the maximum height it reaches.

m