If a rocket's vertical acceleration is 9.8 m/s...
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If a rocket's vertical acceleration is 9.8 m/s...

[From: ] [author: ] [Date: 11-10-02] [Hit: ]
which would mean that it was falling.-Earths gravitational field is 9.8 meters a second. The rocket would stand in place.......
and the initial velocity is 0, would the rocket move at all? Or would gravity affect the rocket, and make it stay in place?

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Yes, it would accelerate upwards at 9.8 m/s^2. The upward acceleration already accounts for the force of the earth pulling down on it. Think about it, if you're not accelerating at all, so 0 m/s^2, so anything greater than that would mean you are moving.

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Unless the rocket was falling.

If you treat down as the "negative" direction (which is usually what you will do), earths acceleration is -9.8.

If it was 9.8 m/s^2, that would mean that earths acceleration was causing it to speed up, which would mean that it was falling.

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Earth's gravitational field is 9.8 meters a second. The rocket would stand in place.
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