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Kinematics Model Rocket problem

by nycjay222
Tags: engine, gravity, kinematics, model rocket, rocket
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nycjay222
#1
Sep16-09, 07:16 PM
P: 7
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?
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rock.freak667
#2
Sep16-09, 08:14 PM
HW Helper
P: 6,206
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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