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.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Force and Motion
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.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Force and Motion questions
The numerical value of the ratio of average velocity to average speed is
A ball is projected at 45°; its horizontal range is 10m. The velocity of projection is
The displacement-time graph for two bodies A and B are straight lines inclined at 60° and 30° to the time axis. Find the ratio of their speed is
If momentum is increased by two times, kinetic energy (K.E) increases by
An athlete completes one round of a circular track of radius R in 40 seconds. What will be the displacement at the end of 1 minute?
How far in meters will a freely falling body fall in 5 seconds?