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

for it to reach the ground. Use the coordinate axes provide in the image.Part $($a$)$ What is the initial velocity, in meters per second, of the stone? Part $($b$)$ What is the magnitude, in meters per squared second, of the acceleration? Part $($c$)$ Enter an expression for the final velocity, vf

$,$ of an object that has an initial velocity, vi

$,$ and accelerates with acceleration a

for a time period $$Delta t

$.$Part $($d$)$ Calculate the magnitude, in meters per second, of the final velocity of the stone. Part $($e$)$ Enter an expression for the displacement, $$Delta y

$,$ of an object that has an initial velocity, vi

$,$ and accelerates with acceleration a

for a time period $$Delta t

$.$Part $($f$)$ Calculate the magnitude, in meters, of the displacement of the stone.