Four children pull on the same stuffed toy at the same time, yet there is no net force on the toy. How is this possible?

Answer:

Forces are either positive or negative vectors, depending on the direction in which the force is acting. The net force is the sum of all of the forces acting on an object. If the children pull on the toy with the same force in opposite directions, the forces will be perfectly balanced and cancel out, leaving a net force of zero.