am pulling my kids in their wagon on the way to the park. The handle makes an angle of 40° above the horizontal and I am pulling with a force of 85.0 ? along the handle. My kids and the wagon have a combined mass of 28 ??. a. Draw a free-body diagram, labeling all the forces acting on the wagon and any angles that may appear in your diagram. Include friction. There should be four forces in your diagram. b. Write out Newton’s second law in the x- and y-directions (∑ ?? = ??? and ∑ ?? = ???). c. What is the normal force exerted on wagon from the ground? d. What is the magnitude of the frictional force if the wagon is moving at a constant velocity? 5 e. What is the coefficient of kinetic friction between the wagon and the ground?

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