Ethan is dragging a bag of grass from the garage to the street on the evening before garbage pick-up day. The diagram at the right is a free-body diagram. It uses arrows to represent the forces acting upon the bag. Each force is labeled according to type. The magnitude of the force is represented by the size of the arrow. Use the free body diagram to determine the net force acting upon the bag. The values of the individual forces are: 

F_grav = F_norm = 63.5 N

F_app = 35.0 N

F_frict = 29.0 N

Unfortunately for Vanessa, the wheels on her suitcase are not working. She pulls on the strap in an effort to budge it from rest and drag it to the curbside check-in desk. The free body diagram at the right depicts the forces acting upon the suitcase. Use the free body diagram to determine the net force acting on the suitcase. The values of the individual forces are:

F_grav = F_norm = 295.0 N

F_tens = 185.0 N

F_frict = 138.0 N

It's Friday night and Skyler has been assigned the noble task of baby-sitting Casey, his 2-year-old brother. He puts a crash helmet on Casey, places him in the red wagon and takes him on a stroll through the neighborhood. As Skyler starts across the street, he exerts a 55.0 N forward force on the wagon. There is a 26.5 N resistance force and the wagon and Casey have a combined weight of 289.0 N. Construct a free body diagram depicting the types of forces acting upon the wagon. Then determine the net force acting on the wagon. 

Two horizontal forces of 268.0 N and 161.0 N are exerted in opposite directions on a large crate. What is the net horizontal force on the crate? Enter a positive value. 

In a rare moment of confusion, Alejandro's sleigh dogs begin pulling in random directions. At one moment, there are three forces exerted by the dogs on the sled. There is a 239.0 N force to the east, a 388.0 N force to the west, and a 319.0 N force to the east.