3.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 tomove upward.
Which principle is followed in this take off of therocket?
(a)Moment of inertia
(b) Conservation of momentum
(c) Newton’s third law of motion
(d) Newton’s law of gravitation
4.The seat belts are provided in the cars so that ifthe car stops suddenly
due to an emergency braking, the persons sitting onthe front seats are not
thrown forward violently and saved from getting injured.Can you guess
the law due to which a person falls in forward directionon the sudden
stopping of the car?
(a)Newton’s first law of motion.
(b) Newton’s second law of motion.
(c) Newton’s third law of motion.
(d) Newton’s law of gravitation.
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Answer:
3. d) Newton's law of gravitation
4. a) Newton's first law of motion
Ok sister I have seen ..........,