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Physical Science
KE, PE, Forces
| Question | Answer |
|---|---|
| speed | The measurement of the rate of change of position with respect to time |
| mass | the amount of matter in something; measured in grams |
| motion | The change in an object’s position with respect to time and in comparison with the position of other objects used as reference points |
| potential energy | Energy that is stored in a system or object |
| kinetic energy | the energy of motion |
| Law of Conservation of Energy | A law stating that energy cannot be created or destroyed—it can only change forms |
| collide/collision | when objects push on one another with force |
| force | a push or pull that can change the motion of an object |
| interacting object | objects that affect one another |
| Newton's Third Law (Action-Reaction) | The law stating that for every action force, there is an equal, opposite reaction force |
| Newton | The SI unit of force, or mass times acceleration |
| spring scale | A tool that measures a pulling force by the tension on a spring in units of newtons |
| Acceleration | A change in motion caused by an unbalanced force acting on an object; includes increasing speed, decreasing speed, or a change in direction |
| Energy | The ability of a system to do work; required for changes to happen within a system |
| System | A group of interacting, interrelated, or interdependent elements forming a complex whole |
| Gravity | The force that causes objects with mass to attract one another |
| Net Force | The sum of all the forces acting on an object |
Created by:
MrBSci
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