Two blocks connected by a light horizontal rope sit at rest on a horizontal, frictionless surface. Block A has mass 15.0 [kg], and block B has mass m. A constant horizontal force F = [60.0 N] is applied to block A. In the first 5.00 [s] after the force is applied, block A moves 18.0 [m] to the right. d. Write Newton’s 2nd law for block A along the horizontal direction and solve for the force exerted by the rope on block A. e. Write Newton’s 2nd law for block B along the horizontal direction and solve for its unknown mass m. (Hint: F on rope A = F on rope B)

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