一道英文物理题目(英文其实很简单).求高手解答~~~~~~~~~~~~~ A 10-kg block is connected to a 40-kg block.The surface on that the blocks slide is frictionless. A force of 50N pulls the blocks to the right. a) what is the magnitude of the acceleration of the 40-kg block? b)what is the magnitude of the tension T in the rope that connects the two blocks?