3601078
Description
Flashcards by laurendavidson, updated more than 1 year ago
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Created by laurendavidson
over 8 years ago
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| Question | Answer |
| What are the two methods of adding and subtracting vectors? | Tip to tail method and tail to tail method |
| What does the tip to tail method look like? | The tip to tail method connects the tip of one vector to the tail of another. |
| What does the tail to tail method look like? | The tail to tail method connects the tail of one vector to the tail of another. |
| When do you use the tip to tail method? | You only use the tip to tail method if the equation has more than two additives. |
| Force | A push or pull on an object, force requires physical contact except for forces produced by fields (gravitational. electric, and magnetic) |
| What are forces modeled by? | Forces are modeled by vectors. |
| What is the magnitude of vector F? | How hard the push or pull is on an object (newton or pounds) |
| What is the direction of vector F? | The direction of the push or pull |
| What is the F of gravity? | Weight |
| What are kinematics? | The study of motion, specifically excluding the causes of motion (forces) |
| What are the 3 kinds of graphs used for kinematics? | Position vs. Time Graph, Velocity vs. Time Graph, Acceleration vs. Time Graph |
| What do all three graphs have in common? | All three graphs represent history in time of motion of an object. |
| Slope | Rise over Run (Y/X) or average vertical axis variable over horizontal axis variable (Vav/Hav) |
| What are the two kinds of slopes? | Average and instantaneous slope |
| Average Slope | Average over a specific interval of time |
| Instantaneous Slope | Velocity at a specific instant of time |
| What does speeding up on an x-t graph mean? | The instant velocity is increasing, the slope of the tangent line becomes more steep as time flows |
| What does slowing down on an x-t graph mean? | The Instant velocity is decreasing, the slope of the tangent line is becoming less steep |
| What does rest mean on an x-t graph mean? | The slope of the tangent line is horizontal. |
| What does moving right on an x-t graph mean? | Positive direction, the slope is positive |
| What does moving left on an x-t graph mean? | Negative direction, the slope is negative |
| What are the two types of graphs? | Vector graphs and history graphs |
| What does positive velocity on a v-t graph mean? | Right, the velocity is positive |
| What does negative velocity on a v-t graph mean? | Left, the velocity is negative |
| What does rest on a v-t graph mean? | The velocity is equal to 0 |
| What is time in physics? | A stopwatch reading |
| What does speeding up on a v-t graph mean? | Upward constant acceleration, line going upward diagonally |
| What does slowing down on a v-t graph mean? | Downward constant deceleration, line going downward diagonally |
| What does constant velocity on a v-t graph mean? | The velocity is at a constant number, the line is horizontal |
| Acceleration | Change in velocity over elapsed time |
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