Physics Final Semester I
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Created by:
TWHerrmann on December 20, 2011
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49 terms
Terms | Definitions |
|---|---|
 base physical quantities | fundamental measurements that have no substitute |
| accepted values | non-contested data (the average of thousands of trials) |
| absolute error | the difference between the accepted value and a measured value |
| relative error | the absolute error divided by the accepted value |
| |AV-YV| | how is absolute error found? |
| (|AV-YV|) / AV | how is relative error found? |
| variable | values we allow to be altered during experimentation |
| control | varibles whose values are intentionally kept the same during experimentation |
| assumption | variables that we assume remain unchanged during experimentation or have no bearing on the experiment if changed |
| constant | a value we believe to never change |
| vertical axis | the dependent value is graphed on the... |
| horizontal axis | the independent variable is graphed on the... |
| independent variable | vairable whose values are chosen BEFORE experimentation |
| dependent variable | variable whose values are unknown until trials take place |
| (x2-x1)/(t2-t1) | how is AVERAGE VELOCITY found? |
| x = (v,avg)t + x,o | how is POSITION found? |
| find the slope of a line tangent to the curve | how is INSTANTANEOUS VELOCITY found? |
| (v-v,o)/(t-t,o) | how is AVERAGE ACCELERATION found? |
| v = v,o + a,o(t) | finish the equation ... v = |
| x = x,o + v,o(t) + a,o(t)^2 | finish the equation ... x = |
| velocity is increasing | acceleration arrows are parallel with the velocity arrows when... |
| velocity is decreasing | acceleration arrows are anti-parallel with velocity arrows when... |
| numbers + units | all values have... |
| vector | quantity that requires direction as a value... |
| acceleration, displacement, position, velocity | what are four examples of vectors? |
| scalars | quantity that does not account direction as part of the value... |
| clock reading, speed | what are two examples of scalars? |
| -9.8 (m/s^2) | what is the value of gravitational acceleration? |
| conversion factor | factor with a constant value that determines the relationship between two measurements of the same type |
| proportionality factor | factor with a constant value that determines the relationship between two measurements of different types |
| amount of matter in an object | what is mass? |
| strength of gravitational force acting upon an object | what is weight? |
| weight | how hard the Earth pulls at matter gravitationally |
| TO us | weight is something that happens... |
| weight | humans have mass, but they do not have... |
| truth | that which is true is immutable... |
| accuracy | how close one measurement is to the real or accepted value |
| precision | degree to which two a set of measurements is close to eachother in value (i.e., very little error value) |
| always parallel | acceleration and net force arrows are... |
| they are the same | what is the relationship between the value of the friction experienced by DISC A travelling at 10 m/s^2 and the friction experienced by DISC B travelling at 20 m/s^2 |
| Fg = m(-9.8N/kg) | how is GRAVITATIONAL FORCE found? |
| a = Fnet/m | how is ACCELERATION found? |
| an object in motion stays in motion unless acted upon by another force | What is Newton's First Law of Motion? (define) |
| a = Fnet/m | What is Newton's Second Law of Motion? (equation) |
| for every action, there is an equal and opposite reaction | What is Newton's Third Law of Motion? (define) |
| force applied by a surface at 90deg off the surface | what is Normal Force? |
| ratio between the maximum static friction to the normal force | what is the Coefficient of Static Friction? |
| force exerted on an object because of contact with a surface | what is kinetic friction? |
| ratio of weight on an object to the mass the object has | what is graviational field strength? |
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