Question

4. In a rocket, a large volume of gases produced by the combustion of fuel is allowed to escape through its tail nozzle in the downward direction with the tremendous speed and makes the rocket to move upward.
MCQ Questions for Class 9 Science Chapter 9 Force and Laws of Motion with Answers 2
Which principle is followed in this take off of the rocket?
(a) Moment of inertia
(b) Conservation of momentum
(c) Newton’s third law of motion
(d) Newton’s law of gravitation

Answer 1

Answer:

i think

option d is correct

Answer 2

Answer:

Newton's Third Law Of Motion

Explanation:

As, Newton's Third Law of Motion state that with every reaction, there is a equal and opposite reaction. large volume of gases produced by the combustion of fuel is allowed to escape through its tail nozzle in the downward direction with the tremendous speed and large volume of gases produced by the combustion of fuel is allowed to escape through its tail nozzle in the downward direction with the tremendous speed