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Question
STATEMENT - 1 : Gas ejected from rocket will never exert thrust on the rocket if the ejected gas and the rocket move in the same direction.
STATEMENT - 2 : To exert thrust on rocket in its direction of motion, the ejected gas (w.r.t. rocket) must move opposite to the velocity of rocket (w.r.t. ground).
STATEMENT - 1 : Gas ejected from rocket will never exert thrust on the rocket if the ejected gas and the rocket move in the same direction.
STATEMENT - 2 : To exert thrust on rocket in its direction of motion, the ejected gas (w.r.t. rocket) must move opposite to the velocity of rocket (w.r.t. ground).
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Solution
The correct option is D Statement-1 is False, Statement-2 is True.
Answer is D
If the Gas ejected from rocket and the rocket move in the same direction, even than thrust will be exerted. Hence statement 1 is false.
From Newton' third law, Ejected gas will exert thrust opposite to it. Hence statement 2 is true.
Answer is D
If the Gas ejected from rocket and the rocket move in the same direction, even than thrust will be exerted. Hence statement 1 is false.
From Newton' third law, Ejected gas will exert thrust opposite to it. Hence statement 2 is true.
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