Two adults and a child want to push a wheeled cart in the direction mark x in the figure. Two adults push with forces F1 and F2 as shown. Find (a) magnitude and (b) direction of smallest force that the child should exert. You can ignore the effects of friction. If the child exert the minimum force found in "a", the cart accelerates at x m/s² in the + x direction, What is the (c) weight and (d) mass of the cart? units a KN b deg KN d. kg F1 A B F2

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