1. Chapter 1, Section 2 Forces

2. Force
Definition: A force is a push or pull Example: Pushing a door open Pulling a wagon

4. Newtons
Definition: units used for force Example: 5N

5. Net Force
Definition: the force that results from combining all the forces on an object.
Ex. The net force during a tug of war game
5N right – 3 N left= 2 N right

7. When 2 forces are in the same direction
Explanation: When two forces are in the same direction, you should ADD them together! Example: 2 N south + 4 N south = 6N south

9. When 2 forces are in the different directions
Explanation: When two forces are in opposite directions, you SUBTRACT them. Example: 12N North – 5 N South = 7N North

11. Balanced Forces
Explanation: Balanced forces occur when the forces applied to an object produce a net force of zero. NO change of movement. Example: Sitting in a chair (60N down, 60 N up= 0 net force)

13. Unbalanced Forces
Explanation: Unbalanced forces occur when the net force on an object is greater than zero and the object changes its position. Example:pushing a box and it slides 2 m.