Two friends, a stocky one and a slim one, push a coach on the same direction. The first one exert a force of 11 N and the second one a force of 7 N. What is the resultant force?
F1 = 11 N
Thus the forces exerted are concurrent and are applied on the same direction, both can be replaced by a single resultant force whose effect is the same if we would apply the previous ones. The magnitude of the new resultant force is calculated:
FR = F1 + F2