Quiz 1 Flashcards
Position (x,y,z)
Tells you how far one point is from another
Vector
Units: meters, feet yards, miles, inches
Time (t)
Tells you when something occurred
Scalar
Units: seconds, s
Velocity (v)
Refers to speed and direction of motion
Vector
Units: meters per second m/s
Acceleration (a)
The change in velocity per unit of time
Vector
Units: m/s^2
Mass (m)
The measure of how much matter is in an object
Scalar
Units: grams and kilograms
Weight (w)
The gravitational force on an object
Vector
Units: Newtons
Force (F)
What makes mass accelerate and can be a push or pull
Vector
Units: Newtons
Pressure (p)
The amount of force per unit area
Scalar
Units: Pascals (Pa)
Density (rho)
Mass per volume
Scalar
Units: m/kg^3
Periodic Motion
Anything that happens over and over at a regular time interval. Ex.) clapping, sun coming up
Simple Harmonic Motion
A special type of periodic motion that a.) has to have an equilibrium point and b.) has to have a linear restoring force
Linear Restoring Force
As the distance away from the equilibrium grows the force grows with it proportionately
Hooke’s Law
The restoring force of a spring is proportional to the distance from equilibrium and acts in opposition
Energy (E)
Force x distance
Scalar
Units: joules/sec, watts
Intensity (I)
Power per unit area
Vector
Units: watts/m^2
