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Physics Unit 1
Vocab
| Term | Definition |
|---|---|
| Equation | A statement that the values of two math expressions are equal (indicated by the sign =) |
| Law | A rule describing a relationship that always works in the same way under the same conditions. |
| Frequency | The number of occurrences of a repeating event per unit of time. |
| Oscillation | Movement back and forth at a regular speed. |
| Wave Period | The time it takes to complete one cycle. |
| Amplitude | The distance from the resting position to the top of the crest or to the bottom of trough. |
| Geocentrism | The belief that the Earth is at the center of the universe. |
| Gravity | Is a force that attracts a body towards the center of the earth or any other physical having mass. |
| Heliocentrism | The belief that the sun is at the center of the universe. |
| Acceleration | The rate at which velocity changes over time. |
| Centripetal Force | Any force that keeps an object moving in a circle. |
| Velocity | A speed in a specific direction. |
| Terminal Velocity | The final, maximum velocity of the following object. |
| Force | A push or pull' something that changes in motion of an object. |
| Friction | A force that resists the motion between two surfaces in contact. |
| Energy | The ability to do work or to cause the change. |
| Theory | A well-tested explanation of a phenomenon that is consistent with all available evidence. |
| Inertia | The resistance of an object to a change in speed or direction of its motion. |
| Joule | A unit used to measure energy and work. |
| Kinetic Energy | The energy of motion. |
| Law of Conservation of Energy | Energy is neither created nor destroyed but transformed and transferred from one form to another. |
| Law of Conservation of Momentum | The amount of momentum does not change in a system as long as there is no outside force acting on that system. |
| Momentum | A measure of mass in motion. |
| Motion | A change of position over time. |
| Vector | A quantity that has both size and direction. |
| Work | The amount of energy to move an object in the direction of the force applied. |
| Simple Machine | A mechanic device that changes the direction of magnitude of a force. |
| Newton's First Law of Motion | A law stating that an object at rest remains at rest and an object in motion with the same velocity and in a straight line unless acted on by unbalanced force. |
| Newton's Second Law of Motion | A law stating that the acceleration of an object increases with increased force, and decreases with increasing mass. |
| Newton's Third Law of Motion | A law stating that every time one object exerts a force on another object, the second object exerts a force that is equal in size and opposite in direction back on the first object. |
| Frequency of a Wave (equation) | f= vλ |
| Speed (equation) | s= d/t |
| Acceleration (equation) | a= v - vo/t = (delta/triangle)v (Delta/triangle) t |
| Force (equation) | F= M x A |
| Momentum (equation) | P= mv |
| Work (equation) | W= Fs |
| Kinetic Energy (equation) | K.E. = 1/2 m v2 (exponent) |
| Gravitational Potential Energy (equation) | U= mgh |
| Second Law of Motion (equation) | F= M x A |
| Newton's Universal Law of Gravitation (equation) | F= G m1 m2/r2 |
Created by:
aLiEn_13
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