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Force and Laws of Motion — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceForce and Laws of Motion1 Mark
MCQ
Rocket works on the principle of conservation of:
  • A
    Mass.
  • B
    Energy.
  • C
    Momentum.
  • D
    Velocity.
✓

Answer

  1. Momentum.

Explanation:

The high velocity of hot gasses which is coming out from the rocket is balanced by the up move of the rocket. This gas has large momentum and an equal momentum is acted to the rocket in opposite direction due to which rocket moves upward. Their conservation of momentum is working.

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