Forces

2. A push or a pull
7. device: “What I change in the investigation.” (Independent starts with
8. Investigation: An investigation or experiment in which the variables are carefully
12. An event in which two (or more) bodies exert forces on each other for a
15. Also sometimes referred to as a control group.
16. amount of something; how large or small something is, represented by the length of the vector arrow.
18. a quantity that has a magnitude and a direction; shown by an arrow representing a force in one direction - must be labeled.
20. The change in motion due to the object’s changing speed or direction.
21. A “downward” force exerted on everything that has mass by the earth.
22. and controlled. A fair investigation can be trusted to yield accurate results.

1. Pair: The equal and opposite forces always present when two objects are in contact. The objects push together equally or pull apart equally. For example, a book on a table or a balloon on a string. Shown as a dot at the contact of two objects, with equal and opposite vector arrows.
3. motion: An object which is not accelerating. Constant motion can mean no
4. of time.
5. variable: The measured results of the investigation. “This is the variable that depends on what I changed.”
6. variable: Variable/condition that is purposely changed in the
9. forces: When the sum of the forces on an individual object add up to zero.
10. The amount of matter in an object.
11. or motion that is not changing in speed or direction.
13. of Comparison: Something used to judge or measure against (in an
14. When the sum of the forces on an individual object add up to zero.
17. Forces: When the sum of the forces on an individual object do not add up to zero.
19. Variables/conditions that are kept the same in an investigation.