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Homework Statement
A rocket starting at rest takes on a net acceleration of 20m/s^2 in a vertical line until it runs out of fuel after 5 seconds.
At what height does it run out of fuel?
What is its velocity when it runs out of fuel?
What is its maximum height?
How long does it take to hit the ground?
Homework Equations
g = -10m/s^2
The Attempt at a Solution
x(t) = 1/2at^2 + Vot
Vo = 0
a = 20m/s^2
t = 5
a)10(25) m = 250m
b)v(t) = at + vo
v(t) = (20)(5) = 100 m/s
c) max height
v(t) = 0
at + vo = 0
at = 0
*;/
d) x(t) = 0
1/2at^2 + Vot
5t^2 + 0What did I do wrong :/. The net acceleration part is confusing me. Is the Vo zero?