When serving a tennis ball, a player hits the ball when its velocity is zero $($at the highest point of a vertical toss$).$ The racquet exerts a force of $499N$ on the ball for $4\mathrm{.}86ms,$ giving it a final velocity of $44\mathrm{.}3\frac{m}{s}.$ Using these data, find the mass $($in $g)$ of the ball.

g