Newton & Energy

3. Newton’s law stating that an object at rest stays at rest or an object in motion stays in motion until unbalanced forces act upon it; often referred to as Newton's first law of motion
8. A measure of how much matter is present in a substance
10. A change in motion caused by an unbalanced force acting on an object; includes increasing speed, decreasing speed, or a change in direction
13. Newton’s law stating that for every action force there is an equal and opposite reaction force; often referred to as Newton’s third law of motion
17. Movement of energy from one system to another
18. The action and reaction forces that occur simultaneously when a force is applied to an object, and the object applies a force that is equal in magnitude but opposite in direction back on the original object
19. The tendency of a physical object to remain still or continue moving unless force is applied
20. A push or pull that can change the motion of an object

1. The way that something causes a change
2. Newton’s law stating that acceleration of an object depends on the object's mass and the magnitude of the force acting upon it (F = ma); often referred to as Newton's second law of motion
4. A group of interacting, interrelated, or interdependent elements forming a complex whole
5. Forces on an object that cause change in the motion of the object
6. The change of energy from one form to another
7. Scientific law stating that energy can be neither created nor destroyed but just changes form
9. Resistance or force of equal magnitude acting in the opposite direction to an action force
11. The change in an object’s position with respect to time and in comparison with the position of other objects used as reference points
12. The ability of a system to do work; required for changes to happen within a system
14. The state of an object when it is not in motion
15. The sum of all the forces acting on an object
16. Forces on an object that do not change the motion of the object