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SESK: Stuff Everyone Should Know · sesk.info/aero-land-speed-exhaust-thrust

What rocket principle can propel a land-speed vehicle?

Gas thrown backward pushes the vehicle forward.

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  1. Gas thrown backward ✔
  2. Air pulling it forward
  3. Gravity pulling it along

Why: A propulsion system accelerates gas backward, producing forward thrust on the vehicle. The same action and reaction idea applies whether the vehicle climbs or races along the ground.

Huh, didn't know that: Balloons and rockets work alike: gas escaping one way pushes them the other way.

The dad joke
The speed vehicle had a moving argument with its exhaust.
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References

Answer: Gas thrown backward. A propulsion system accelerates gas backward, producing forward thrust on the vehicle. The same action and reaction idea applies whether the vehicle climbs or races along the ground.

  1. Aerospace Dimensions Module 4, Rockets akwg.cap.gov/media/cms/Module_4__Rockets_6660F78F20B68_4ad77.pdf
    gas to escape, and thus provides a thrust that propels the rocket in the opposite direction
    Checked 2026-10-10.

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