PHYS 1051 Lecture Notes - Lecture 3: Pythagorean Theorem, Horizontal And Vertical
Ch. 3 Vectors Notes
Vector Addition
Vectors can be represented with arrows
The arrow points in the direction of the vector and the length of the arrows represents
the magnitude
Solved either mathematically or graphically
Vectors in the same direction= add them
Vectors in different directions= subtract them
Vectors perpendicular=
oPythagorean theorem to find variable
oTrigonometry to find angle
Vectors that are to parallel or perpendicular:
oDraw each vector starting at the origin
oResolve any vector that is not on an axis into x and y components
oCombine x’s and y’s
Relative Motion
VPE= Velocity of a person relative to Earth
Ch. 4 2 Dimensional Kinematics Notes
General Notes
Horizontal direction- x axis
oConstant velocity
oAx= 0 m/s^2
Vertical direction- y axis
oBehaves just like freefall
oAy= -9.80m/s^2
Vectors= velocity, displacement, and acceleration
Motion in the x direction is constant
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Document Summary
The arrow points in the direction of the vector and the length of the arrows represents the magnitude. Vectors in the same direction= add them. Vectors perpendicular: pythagorean theorem to find variable, trigonometry to find angle. Vectors that are to parallel or perpendicular: draw each vector starting at the origin, resolve any vector that is not on an axis into x and y components, combine x"s and y"s. Vpe= velocity of a person relative to earth. Horizontal direction- x axis: constant velocity, ax= 0 m/s^2. Vertical direction- y axis: behaves just like freefall, ay= -9. 80m/s^2.
