8.1 Physics Flashcards
What is the SI system based on?
The metric system, must be used by law throughout the world
What are the fundamental units in physics/aerodynamics?
Mass
Length
Time
Temperature
What is mass measured in
Kilograms (KG)
What is the mass of 1KG defined by
A piece of platinum alloy at the office of weights, Paris.
Volume of 1L of pure water at 4 degrees Celsius
How is length measured
Meters (M)
What is light defined as
A fraction of unchangeable speed of light
What is the unit measure of temperature
Kelvin (K)
What are the 6 basic fundamental quantities
Speed Acceleration Power Pressure Force Work
What is speed
A distance an object covers over a unit of time
What is acceleration
Time change takes place
What is acceleration denoted by
M/s squared
What is speed denoted by
V (velocity)
What is acceleration due to gravity denoted by
g
What is the average acceleration due to gravity
9.81 meters/second squared
What is weight measured in
N (newtons)
What is Newton’s second law
F=MA
What is work done
An object moved over a distance
Work=NM
Work = force x distance
What is work done denoted by
Joule (j) also measured in newton meters