Unit 2 Force & Motion Chapter 5 Section 2 Force
What needs to happen for this box to be in motion? PUSH PULL or a
Force force - a push or pull an object will speed up, slow down, or turn only if something pushes or pulls on it Ex: a golf club pushes on a ball gravity pulls on the falling golf ball Earth pushes against the ball when it lands
Forces net force - the combination of all forces acting on an object the net force always determines the motion of the object more than one force can act on an object at the same time
Net Force two forces in the same direction are ADDED to get the net force two forces in opposite directions are SUBTRACTED to get the net force
Balanced vs. Unbalanced balanced forces - cancel each other out and thus do not change the object’s motion (net force = zero) unbalanced forces - change the object’s motion (net force ≠ zero)