A model rocket is launched straight upward with an initial speed of $46\mathrm{.}0$ m$/$s$.$ It accelerates with a constant upward acceleration of $1\mathrm{.}50$ m$/$s$2$ until its engines stop at an altitude of $180$ m$.$

$($a$)$ What can you say about the motion of the rocket after its engines stop?

This answer has not been graded yet.

$($b$)$ What is the maximum height reached by the rocket?

m

$($c$)$ How long after liftoff does the rocket reach its maximum height?

s

$($d$)$ How long is the rocket in the air?

s