PHYS 1051 Lecture Notes - Lecture 3: Pythagorean Theorem, Horizontal And Vertical
Ch. 3 Vectors Notes
Vector Addition
ļ·Vectors can be represented with arrows
ļ·The arrow points in the direction of the vector and the length of the arrows represents
the magnitude
ļ·Solved either mathematically or graphically
ļ·Vectors in the same direction= add them
ļ·Vectors in different directions= subtract them
ļ·Vectors perpendicular=
oPythagorean theorem to find variable
oTrigonometry to find angle
ļ·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 xās and yās
Relative Motion
ļ·VPE= Velocity of a person relative to Earth
Ch. 4 2 Dimensional Kinematics Notes
General Notes
ļ·Horizontal direction- x axis
oConstant velocity
oAx= 0 m/s^2
ļ·Vertical direction- y axis
oBehaves just like freefall
oAy= -9.80m/s^2
ļ·Vectors= velocity, displacement, and acceleration
ļ·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.
