the resulting force determined by combining all of the forces acting on an object
When a person kicks a soccer ball, there are several forces acting on the object. First, are the forces of gravity and normal force. These two forces will oppose one another and cancel each other out. Next, is the force of friction. This is the force that is holding the soccer ball back and slowing it down. Finally, is the force applied to the ball that is created by the person kicking it. In the end, the net force on the ball will be positive in the direction that it is kicked, as it would be greater then the frictional force. When objects are at a constant velocity, the net force is considered to be zero, as all forces are equal.