Question:
A rocket rises vertically, from rest, with an acceleration of $3.2 \textrm{ m/s}^2$ until it runs out of fuel at an altitude of 775 m. After this point, its acceleration is that of gravity, downward.
- What is the velocity of the rocket when it runs out of fuel?
- How long does it take to reach this point?
- What maximum altitude does the rocket reach?
- How much time (total) does it take to reach maximum altitude?
- With what velocity does it strike the Earth?
- How long (total) is it in the air?
Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014. Reprinted by permission of Pearson Education Inc., New York.
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Quick Answer:
- $70\textrm{ m/s}$
- $22\textrm{ s}$
- $1030\textrm{ m}$
- $29\textrm{ s}$
- $-142\textrm{ m/s}$
- $44\textrm{ s}$
Giancoli 7th Edition, Chapter 2, Problem 48
(8:50)