Posted by taylor on Friday, November 18, 2011 at 5:11pm.
a model rocket rises with constant accerleration to a height of 3.2 m, at which point its speed is 26.0 m/s. (a) how much time does it take for the rocket to reach this height? (b) what was the magnitude of the rocket's acceration? (c) find the height and speed of the rocket 0.10 s after launch.

physics  tchrwill, Saturday, November 19, 2011 at 11:06am
The equations that apply to rising bodies are
.....Vf = Vo  gt (the term āgā for acceleration due to gravity is assumed constant on, or near, the surface of the Earth)
.....d = Vo(t)  g(t^2)/2
.................2
.....Vf^2 = Vo^2  2gd
From Vf^2 = Vo^2  2gd
.....26^2 = 0^2 + 2(a9.8)3.2 from which
.....a = 115.425m/s^2
From Vf = Vo  gt
.....26 = 0 + (a9.8)t from which
t = .246sec.
At t = .10sec, from
Vf = Vo  gt
Vf = 0 + (a9.8).10 From which
Vf = 10.56m/s
At t = .10sec, from
d = Vo(t)  g(t^2)/2 from which
d = o(.10) + (a9.8)(.10)^2/2 from which
d = .528met.
Answer This Question
Related Questions
 physic (PLEASE READ)  a model rocket rises with constant accerleration to a ...
 phyics (PLEASE PLEASE READ)  a model rocket rises with constant accerleration ...
 Physics  A model rocket rises with constant acceleration to a height of 3.1 m, ...
 Physics  Can someone help me find Delta Time for the first 150 meters of this ...
 math  A model rocket is launched off the top of a table. The height of the ...
 Physics  A model rocket is launched straight upward with an initial speed of 57...
 Physics  A model rocket is launched straight upward with an initial speed of 50...
 Physics  A model rocket is launched straight upward with an initial speed of 46...
 Physics  A model rocket is launched straight upward with an install speed of 57...
 physics  A model rocket is launched straight upward with an initial speed of 30...
More Related Questions