When something is not moving, what are the forces acting on it doing?
UNBALANCED FORCES CAUSE CHANGES IN MOTION
Pushes and pulls cause things to start moving, speed up, slow down, change direction or stop moving.
All changes in motion happen because of unbalanced forces.
Motion increases when a force is being exerted.
Motion stops when a force opposes the motion.
FORCES CAN OPPOSE EACH OTHER
Two forces acting against each other are opposing (the two different pulls in a tug of war, for example).
If one of these forces is stronger than the other one, it will always win.
If the opposing forces are pushing or pulling something with equal strength, the object will not move because the two forces are balancing each other. Change in movement depends upon forces being unbalanced.
