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For more information, please see full course syllabus of AP Physics C/Mechanics
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Lecture Comments (4)

1 answer

Last reply by: Taylor Wright
Sat Apr 19, 2014 3:29 PM

Post by Taylor Wright on April 19, 2014

Shouldn't the value for Example 1 be (-12)/(sqrt(14)*sqrt(21))  ?

I believe the second radical in the denominator was calculated wrong.

1 answer

Last reply by: Jamal Tischler
Tue Dec 30, 2014 4:06 AM

Post by Justin Malaer on January 20, 2013

vector A cross vector A = zero? or does it equal the zero vector? Because at the beginning you said that a vector cross a vector gives you another vector. and zero is a scalar.

Dot Product and Cross Product

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Dot Product 0:12
    • Vectors in 3 Dimensions
    • Right Handed System
    • Vector With 3 Components (Ax,Ay,Az)
    • Magnitude in 2 Dimension
    • Magnitude in 3 Dimension
    • Dot Product of i*i
    • Two Vectors are Perpendicular
    • A.B
  • Angle Between Two Vectors 17:27
    • Given Two Vectors
    • Calculation Angle Between Vectors with (A.B)
  • Cross Product 23:14
    • Cross Product of AxB
    • Magnitude of C=AxB cos Theta
    • Right Hand Rule
    • BxA
    • Direction of IxJ=K
    • JxK
    • KxI
  • Evaluation in Terms of Determinants 39:28
    • Two Vectors A and B with Magnitude and Direction
    • Calculate AxB
  • Example 49:59
  • Extra Example 1: Perpendicular Vectors
  • Extra Example 2: Area of Triangle Given Vertices