The function sof desoristit the motion of a paticle along a line, for ary bime $f$ z $0.$

$(7)=r^2-9r35$

$($a$)$ Find the velocly fincion $p(1)$ of the particle at any linet a $0.$

$45=$

$$

$(9)$ Dievety the time intervel phan the particle is moveg is a postive direction.

$$

$(-,-\frac{3}{2})$

$$

$(-\frac{5}{2}-9)$

$$

$(0,\frac{5}{2})$

$$

$(-n,\frac{5}{2})$

$$

$(\frac{5}{2},-)$

$($c$)$ identify the time interal shen the perisle in moning in s nepotive direction.

$$

$)=(\frac{3}{5}$

$($

$(-\frac{5}{2}0)$

$$

$(a,\frac{3}{2})$

$$

$(-,\frac{9}{2})$

$$

$(\frac{3}{2^2}-)$

$(9)$ Iderify The Elle myathe petise thayes in ereften

$t=$