Kinematics Model Rocket problem !!!!


by nycjay222
Tags: engine, gravity, kinematics, model rocket, rocket
nycjay222
nycjay222 is offline
#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
rock.freak667 is offline
#2
Sep16-09, 08:14 PM
HW Helper
P: 6,213
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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