2 Blocks SLIDING Across EACH OTHER!

Block A of mass 35kg is resting on a frictionless floor. Another block B of mass 7kg is resting on it as shown in figure. The coefficient of static friction between the blocks is 0.5, while coefficient of kinetic friction is 0.4. If a force of 100N is applied to block B acceleration of block A will be (Take g=10/ms^2)

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