Rocket Propulsion
Rocket propulsion primarily relies on conservation of:
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About This Question
- Subject
- physics
- Chapter
- laws of motion
- Topic
- rocket propulsion
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Momentum
Rocket propulsion is a classic example of Conservation of Linear Momentum.
- The rocket and its fuel form an isolated system (initially at rest, P=0).
- When the engine ignites, hot gases are expelled backward at high velocity (mgasvgas).
- To keep the total momentum zero, the rocket must gain an equal amount of momentum in the forward direction (mrocketvrocket).
- This is also explained by Newton's Third Law: the rocket pushes the gas back, and the gas pushes the rocket forward (thrust).
This easy difficulty physics question is from the chapter laws of motion, covering the topic of rocket propulsion. It appeared in the 2025 exam.
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