Vectors Flashcards
What is an Inertial Frame of Reference?
Frame of Reference moving with constant velocity relative to origin;
impossible to tell whether FOR is in motion if observer is moving too
What is a Vector?
A directed line segment |R|
What is a Vector Quantity?
Measurements that have both magnitude (size) and direction (negative/positive)
What are examples of a vector quantity?
Force, Velocity, Weight, and Displacement
What is a Scalar Quantity?
Measurements with only magnitude
What are examples of a scalar quantity?
Mass, Distance, Speed, and Energy
What is a Resultant?
A vector sum; vectors add constructively from head to tail
What is a Concurrent Vector?
Vectors that act at the same place and same time
What is a Equilibrant?
A third vector that is equal and opposite to the resultant
What is a Frame of Reference?
Observer’s POV relative to the location of object; requires coordinate grid with origin
In reference to a hypotenuse of R, what is an x-component equal to?
x=rcosθ
In reference to a hypotenuse of R, what is the y-component equal to?
y=rsinθ
