Thrust
Thrust is a force used to propel an object by expelling gas molecules at high speeds.[1] These molecules are what causes the object, such as a rocket, to accelerate. The gas is expelled because an engine or turbine does work on it, sending it to the rear of the engine; this generates thrust in the opposite direction of the moving gas (see Figure 1).[2]
Visit NASA to learn more about thrust and different propulsion systems.
Figure 1. The concept of thrust works because of Newton's 3rd law—every action has an equal and opposite reaction.[3]
Figure 2. A rocket uses thrust to overcome the gravity of the Earth.[4]
For Further Reading
- Force
- Law of conservation of energy
- Work
- Kinetic energy
- Engine
- Or explore a random page
References
- ↑ R. D. Knight, "Force and Motion" in Physics for Scientists and Engineers: A Strategic Approach, 3nd ed. San Francisco, U.S.A.: Pearson Addison-Wesley, 2008, ch.5, pp.121
- ↑ NASA, What is Thrust? [Online], Available: https://www.grc.nasa.gov/www/k-12/airplane/thrust1.html
- ↑ Made internally by a member of the Energy Education team.
- ↑ WikiImages, Pixabay [Online], Available: http://pixabay.com/p-67721/?no_redirect