A stone is dropped from rest from the top of a building. It takes $\backslash$Delta t$=3\mathrm{.}89$s

for it to reach the ground. Use the coordinate axes provide in the image$\mathrm{.}17\%$ Part $($a$)$ What is the initial velocity, in meters per second, of the stone?

$v_i=[l,]\frac{m}{s}$

$17\%$ Part $($b$)$ What is the magnitude, in meters per squared second, of the acceleration?

$17\%$ Part $($c$)$ Enter an expression for the final velocity, $v_f,$ of an object that has an initial velocity, $v_i,$ and accelerates with acceleration a for a time period $t.$

$17\%$ Part $($d$)$ Calculate the magnitude, in meters per second, of the final velocity of the stone.

$17\%$ Part $($e$)$ Enter an expression for the displacement, $y,$ of an object that has an initial velocity, $v_i,$ and accelerates with acceleration a for a time period $t.$

$17\%$ Part $($f$)$ Calculate the magnitude, in meters, of the displacement of the stone. please answer every part!!!