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PBHS physics
Physics terms
| Question | Answer |
|---|---|
| change in speed or direction | acceleration |
| value that includes magnitude and direction | vector |
| value that only includes amount (not direction) | scalar |
| objects continue at rest or in motion at same speed and direction is which law? | Newton's 1st Law of Motion |
| Newton's 1st Law of Motion called? | (law of)inertia |
| Unbalanced force produces acceleration; force = mass x accel is which law? | Newton's 2nd Law of Motion |
| Action-Reaction law | Newton's 3rd Law of Motion |
| Friction between surfaces non-moving | static friction |
| Friction between moving surfaces | kinetic friction |
| suppport force perpendicular to a surface | normal force |
| force through a distance (Fxd= ) | work |
| total length | distance |
| ending position minus starting position | displacement |
| acceleration rate of freefall on earth | 9.8 m/s2 |
| force toward the center of a curved path | centripetal force |
| sum of all kinetic and potential energies | mechanical energy |
| energy of motion | kinetic energy |
| stored energy | potential energy |
| rate of work (W/t) | power |
| the time over which a force acts or the change in momentum (F x t) | impulse |
| mass times velocity | momentum |
| distance per time (d/t)with direction | velocity |
| d/t without direction | speed |
| rate of change in velocity | acceleratio |
| attractive force between all masses | gravitational force |
| directly proportional to product of masses and inversely proportional to square of distance between them | gravitional force |
| capital/large 'G' | universal gravitational constant |
| value of universal gravitational constant or universal constant or constant of proportionality | 6.67 x 10e-11 N-m2/kg2 |
| universal law of gravitation stated by? | Sir Isaac Newton |
| any push or pull | force |
| amount of matter in composition | mass |
| pull of gravity on mass | weight |
| amount of space occupied | volume |
| SI unit of mass | kg |
| SI unit of length | m |
| SI unit of temp. | K (the kelvin) |
| SI unit of amount of substance | mole |
| SI stands for | International System of Units |
| SI unit of current | ampere (amps) |
| SI unit of charge | coulomb |
| SI unit of luminous intensity | candela |
| SI unit of time | s |
| SI derived unit of force | N |
| SI derived unit of energy or work | J |
| SI derived unit of volume | m3 |
| SI derived unit of power | watt, W |
| SI derived unit of pressure | Pa (pascal) |
| SI derived unit of electrical potential or electrical differenctial (electrical force) | volt (V) |
| Si derived unit of electrical resistance | Ohm |
| SI derived unit of frequency (wave) | Hertz |
| measurement of crest to crest on a wave | wavelength, Lambda |
| frequency of one wave per second | one Hz |
| from center of a wave to top of crest or bottom of trough | amplitude |
| the greater the energy, the ____ the wavelength | shorter |
| force per area (F/a) | pressure |
| force of surfaces in contact | friction |
| number of waves passing a point in a given amount of time | frequency |
| distance a wave travels per time | wave speed or velocity |
| an object in a fluid experiences an upward force equal to the weight of the fluid displaced | Archimedes' Principle |
| upward force of a fluid | buoyant force |
| mass per volume (m/v) | density |
| the faster a fluid, the lower its internal pressure | Bernoulli's Principle |
| Average KE of a substance's particles measures | temperature |
| total energy of all of a substance's particles | thermal energy |
| the transfer of energy from hotter to colder | heat |
| -273.15 degrees Celsius | Absolute Zero |
| 0 kelvins | Absolute Zero |
Created by:
gkarlish
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