Four forces act on an object, given by  A = 33.3 N east,   B = 40.3 N north,   C = 84.7 N west,  and  D = 72.7 N south.  (Assume east and north are directed along the +x-axis and +y-axis, respectively.) HINT (a)What is the magnitude of the net force (in N) on the object?   (b)What is the direction

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”