1. A force acting on an object is represented by an arrow with its origin on the object:
2. An object can only interact with another object
3. The action of a set of forces on the same object produces the same effect as a single force that is usually known as resultant force.
4. The resultant force of two forces of components (2,0) y (-3,1) acting on an object is (3,0)
5. Forces have four components
7 If we hang a bag full of tennis balls that weighs 200N from a spring, the elastic force that the spring must exert to hold up the bag must be at least 200N in the opposite direction.
8. Forces, like mass or time, only need a number to be completely defined