Kinematics Model Rocket problem !!!!

nycjay222

A) A model rocket is launched straight upward with an initial speed of 49.6 m/s. It accelerates with a constant upward acceleration of 1.83 m/s2 until its engines stop at an altitude of 155 m. What is the maximum height reached by the rocket?

B) How long after lift off does the rocket reach its maximum height?

C)How long is the rocket in the air?

rock.freak667

2. Relevant equations
v²=u²+2a(s-s₀)

v=u+at

s=s₀ut+1/2at²

you will need these

3. The attempt at a solution

you will need to do this

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nycjay222	Kinematics Model Rocket problem !!!! A) A model rocket is launched straight upward with an initial speed of 49.6 m/s. It accelerates with a constant upward acceleration of 1.83 m/s2 until its engines stop at an altitude of 155 m. What is the maximum height reached by the rocket? B) How long after lift off does the rocket reach its maximum height? C)How long is the rocket in the air?