While enjoying an outing on a hot$-$air balloon, Londell dropped a racketball of mass $37\mathrm{.}0$ g when she was at a height of $650.m$ above ground. Use $9\mathrm{.}80\frac{m}{s^2}$ for g $.$

a$)$ What is the acceleration of the ball $t_1=3\mathrm{.}10s$ after it was dropped?

vec$(a)=\frac{(hat(j))\text{u}\text{n}\text{i}\text{t}}{\text{E}\text{n}\text{t}\text{e}\text{r}an\text{i}\text{n}\text{t}\text{e}\text{g}\text{e}\text{r}or\text{d}\text{e}\text{c}\text{i}\text{m}\text{a}\text{l}\text{n}\text{u}\text{m}\text{b}\text{e}\text{r}\text{m}\text{o}\text{r}\text{e}\text{.}1}$

b$)$ What is the velocity of the ball then?

vec$(v)=,$hat$(j)$ unit

c$)$ What is the ball's displacement during this time $)=(3\mathrm{.}10(s)?$

vec$(d)=$hat$(j)$ unit

Now Londell decided to instead throw a second identical ball downward with a velocity of

$v_2=(-2\mathrm{.}50\frac{m}{s})hat(j)$

d$)$ What is the velocity of the ball $t_1=3\mathrm{.}10s$ after it was dropped?

vec$(v)=,$hat$(j)$ unit

e$)$ What is the acceleration of the ball then?

vec$(a)=,$hat$(j)$ unit

f$)$ What is the ball's displacement during this time $)=(3\mathrm{.}10(s)?$

vec$(d)=,$hat$(j)$ unit

g$)$ What is the ball's velocity when it reaches the ground?