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OAT Physics
Chapter 1 -Units and Kinematics
| Term | Definition |
|---|---|
| length | m |
| mass | kg |
| Force | N |
| E/Work | Joule |
| Time | sec |
| Power Watt | |
| Angstrom | 10E-10m |
| nm | 10^-9m |
| 1 eV (electron-volt) | 1.6E-19J |
| Kilo | 10^3 |
| Mega | 10^6 |
| Giga | 10^9 |
| micro | -6 |
| pico | -12 |
| nano | -9 |
| when multiplying | multiply mantissa, add exponents |
| when dividing | divide mantissa, subtract exponents |
| Sin 0 | 0 |
| Cos 0 | 1 |
| Sin 30 | i/2 |
| Cos 30 | radical 3 over 2 |
| Sin 45 | radical 2 over 2 |
| Cos 45 | radical 2 over 2 |
| Sin 90 | 1 |
| Cos 90 | 0 |
| Sin 180 | 0 |
| Cos 180 | -1 |
| Sin 60 | radical 3 over 2 |
| Cos 60 | 1/2 |
| Scalars | magnitude but NO direction; speed, mass, E, distance |
| Vector | magnitude AND direction; force, velocity, displacement, acceleration, momentum |
| resultant | vector sum |
| Tan theta = 1 | theta = 45 degrees |
| Kinematics | branch of mechanics dealing with the description of motion |
| instantaneous speed | magnitude of instantaneous velocity; scalar |
| instantaneous velocity | refers to a single instant of time (specific time) ; vector |
| Avg speed | distance/time |
| Avg velocity | displacement/time |
| Avg Acceleration | rate of change of an object's velocity so (delta velocity/delta time) |
| instantaneous acceleration | acceleration at one point of a particle's path |
| acceleration due to gravity | object in free-fall; 9.8m/s^2 |
| projectile motion | Vx is constant; a in x direction = 0 |
| Motion EQ | 1. v = v0 + at 2. x-x0 = v0t + (1/2)at^2 3. v^2 = v0^2 + 2a(x-x0) |
| At max height | v = 0 |
Created by:
JaeBae4444
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