Answer:
(i)
Jet aero planes and rockets work on the principle of third law of motion.
In this case, the hot gases come out of a nozzle with great force, i.e.,
action and the rocket moves with high speed upwards as a reaction as shown in
figure A.
(ii) If we fill a balloon with air and hold it with its mouth
downwards, then when release the balloon, the air rushes out vertically
downwards (action). The balloon moves vertically upwards (reaction) as showing
figure B.
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