Rocket works on the principle of conservation of
Correct answer: C. momentum
- A. mass
- B. energy
- C. momentum
- D. angular momentum
Explanation
Rockets work on the principle of conservation of momentum. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. Rockets expel mass at high speeds in one direction, causing the rocket to move in the opposite direction.Incorrect Options Explanation:(a) mass: While mass is a factor in rocket propulsion, the principle governing its motion is conservation of momentum.(b) energy: While energy principles are involved in rocket propulsion, the primary principle governing its motion is conservation of momentum.(d) angular momentum: Rocket propulsion is not primarily governed by the conservation of angular momentum, although this principle may come into play in some specific scenarios involving rocket guidance and stabilization.
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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