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Q.11) A force F, acts on a particle so as to accelerateit from rest to a velocity v. The force F, is thenreplaced by F which decelerates it to rest.(1) F1 must be equal to F2(2) F, may be equal to F2(3) F, must be unequal to F2(4) of these

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ans is (4) none of these

Option 1 is the correct answer. As force F2 is able to decelerate F1 so it must be equal to it

direction of force will be change to decelerate so 1st cant be the anwer



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