(a) Jet aeroplanes 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.
(b) 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).
