Is it true that a rocket can’t propel itself in vacuum?

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True

False

answer is B.

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Detailed Solution

The above statement is false.
Newton's third law of motion states that "every action has an equal and opposite reaction which acts on two different bodies." So, when a rocket expels fuel from one end, it gains momentum equal to that of expelled gases. Therefore, it propels itself forward without the use of air.
The correct statement would be that a rocket can propel itself in a vacuum.

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