Unit 1 - Preparing for physics RT
Vectors/Scalars
Scalars- numerical quanity having only size and units
Multiplication of a vector by any real number
will resultant in a parallel vector with different
lengths.
direction stays the same
direction is exactly the opposite
Vectors- numerical quanity having size,units and direction
Tip to tail method- connecting vectors and drawing R
1. create table to add together the Xs and Ys
2. use Pythagorean to find magnitude
3. use Tan-1 to find direction
direction= θ = tan-1 (y/x)
magnitude= v|=√a2+b2
1. use Sin and Cos to find components
2. given components steps
X value= Ax=A cos θ
Y value= Ay=A sin θ
Put vector tails together and complete
the triangle, pointing the vector that
comes first in the subtraction.
Frames Of Reference
Trajectories:The path and object in motion takes
studying and object in motion,
Position Vs Time
Consider a pendulum
The purpose: What you perceive
to be the motion of object, depends
on the observer.
Geometry
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Trigonometry
Tan= opp/adj
Sin= opp/hyp
Cos= adj/hyp
Pythagorean Theorem= c2= a2+b2
Properties of a function
Minimum
Maximum
(Y-axis)
Variation
Increasing, decreasing or constant.
sign
Above or below the x axis/ y axis
Y-Intercept
(Initial values)
X-Intercept
(Zero's)
Rangeeeee (theres many e's because it keeps translating in french)
(Y-Axis)
Domains
(X-Axis)
Graphs
Graphs are known to be a science based on a collection of data, making it easier to analyze data from the graph.
Line of best fits
Line of best fits is a type of data that is meant to be alligned to a higher degree of correlation. It can either be a curved line or a straight line depending on it's situation.
Broken line Graph
A broken line graph represents a data that progresses unevenly through an event.
Conversions/Units
Units
SI Units: System of Unit of measure
Length(m),Mass(kg),Time(s)
Used to compare two or more
quantities
Metric System
King Henry Died Unexpectedly Drinking Chocolate Milk ( used to remember the order)
Goes up by 10s(10^2, 10^3)
Angles
Geometry of angles
Quadrilateral add up to 360
Triangles add up to 180
vertically opposite angles
Corresponding angles
Alternate exterior angles
Alternate interior angles
