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Motion Unit
Motion Unit Vocab
| Term | Definition |
|---|---|
| Conservation of momentum (PS2-1) | Definition: The total momentum of a system stays the same if no external net force acts on it. |
| Energy transfer (PS2-1) | Definition: Energy moves from one object or system to another. |
| Transfer (PS2-1) | Definition: Movement of something, such as energy, from one place or object to another. |
| Force (PS2-1) | Definition: A push or pull on an object. |
| Balanced force (PS2-1,2-2) | Definition: Forces that cancel, producing zero net force. |
| Friction (PS2-1) | Definition: A contact force that opposes sliding or attempted sliding between surfaces. |
| Direction of a force (PS2-1) | Definition: The way a push or pull acts, such as left, right, up, or down. |
| Impact (PS2-1) | Definition: A collision or forceful contact between objects. |
| Net force (PS2-1, PS2-2) | Definition: The overall force found by combining all forces acting on an object. |
| Inertia (PS2-1) | Definition: An object’s tendency to resist changes in its velocity (speed or direction) |
| Action/reaction (PS2-1) | Definition: Two equal-strength, opposite-direction forces that interacting objects exert on each other. |
| Gravity (PS2-1) | Definition: An attractive force between objects with mass |
| Acceleration (PS2-1) | Definition: The rate at which velocity (speed or direction) changes over time. |
| Newton (PS2-1) | Definition: The SI unit of force (N); one newton accelerates 1 kg at 1 m/s². |
| Thrust (PS2-1) | Definition: A pushing force that propels an object, such as a rocket or jet. |
| Lift (PS2-1) | Definition: A force perpendicular to airflow that can help support an aircraft. |
| Applied force (PS2-2) | Definition: A push or pull exerted on an object by a another object. |
| Collision (PS2-2) | Definition: An event in which objects strike or come into contact with each other. |
| Unbalanced force (PS2-2) | Definition: Forces that do not cancel, leaving a nonzero net force and causing movement. |
| Position over time (PS2-2) | Definition: How an object’s location changes as time passes. |
| Forms of energy (PS3-1) | Definition: Different ways energy is described, such as kinetic, thermal, or chemical energy. |
| Magnitude (PS3-1) | Definition: The size or amount of a quantity. |
| Motion energy (PS3-1) | Definition: Kinetic energy: energy an object has because it is moving. |
| Proportional (PS3-1) | Definition: Two quantities have a constant ratio; multiplying one by a factor multiplies the other by that factor. Example: F = Mass x Acceleration |
| Ratio (PS3-1) | Definition: A comparison of two quantities by division. |
| Square root (PS3-1) | Definition: A number that, when multiplied by itself, gives the original number. |
| Potential energy (PS3-1) | Definition: Energy stored because of an object’s position, arrangement, or condition. |
| Elastic collision (PS3-1) | Definition: A collision in which total kinetic energy is conserved. |
| Inelastic collision (PS3-1) | Definition: A collision in which some kinetic energy changes into other forms of energy |
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