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Question 39: (a) State the law of conservation of momentum. (b) Discuss the conservation of momentum in each of the following cases : (i) a rocket taking off from ground. (ii) flying of a jet aeroplane. Lakhmir Singh Physics Class 9

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(a) the law of conservation of momentum states that in the ABSENCE of net external force on the SYSTEM, the momentum of the system REMAINS unchanged m1u1+m2u2=m1v1 +m2v2(B)



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