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Assertion: Two blocks of masses `m_(A)` and `m_(B)` `(gtm_(A)` are thrown towards each other with same speed over a rough ground. The coefficient of friction of both the blocks with ground is same. Initial velocity of CM is towards left. Reason: Initial acceleration of center of mass is towards right.A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.B. If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.C. If Assertion is true but Reason is false.D. If Assertion is false but Reason is true. |
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Answer» Correct Answer - B `v_(CM) = (m_(A)(+v) + m_(B)(-v))/(m_(A) + m_(B)) = -ve` Both A and B will have same acceleration (ug) on A towsards left and on B towards right. Since, B have more mass so acceleration of CM will be towards right. |
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