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Lecture Comments (8)

1 answer

Last reply by: Jamal Tischler
Thu Dec 25, 2014 9:00 AM

Post by Rajah Cook on September 18, 2013

Hi, it seems as though the "Extra Example 3" isn't playing because the cam file "Phys-1-2-Cam-Ex3.flv" is being linked to with the address "".  Note: the word "cam" should be capitalised.
Cheers :)

1 answer

Last reply by: Jamal Tischler
Thu Dec 25, 2014 8:52 AM

Post by Sam Mikhael on January 27, 2012

can someone explain to me exactly what the parallelogram law is cuz i didnt get it???

1 answer

Last reply by: Nathaniel Hinojosa
Thu Apr 7, 2011 6:58 PM

Post by Nathaniel Hinojosa on April 7, 2011

Hmm, Extra Example 3 is playing for some reason

1 answer

Last reply by: Vanessa Punal
Sat Apr 24, 2010 4:46 PM

Post by Ana-Maria Greene on October 26, 2009

How can I find the value of s in the interval [0,2/2] such that tan s= .790325578?

Related Articles:

Vector Addition

  • Vectors are added by placing the tail of one vector on the head of the preceding vector; the sum of the vectors is obtained by joining the first tail to the last head.
  • The analytical method of adding vectors makes use of the laws of cosines and sines.
  • A vector is completely specified by giving its magnitude or direction, or by giving its components in a coordinate system.
  • Vectors may be added by adding the respective components.
  • Two vectors are equal if their respective components are equal.
  • The dot product of two vectors is a scalar; it is equal to the product of the magnitudes of the vectors and cosine the angle between them.

Vector Addition

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
  • Graphical Method 0:10
    • Magnitude and Direction of Two Vectors
  • Analytical Method or Algebraic Method 8:45
    • Example: Addition of Vectors
    • Parallelogram Rule
    • Law of Cosines
    • Law of Sines
  • Components of a Vector 21:35
    • Example: Vector Components
    • Introducing Third Dimension
    • Right Handed System
  • Specifying a Vector 34:44
    • Example: Calculate the Components of Vector
  • Vector Addition by Means of Components 41:23
  • Equality of Vectors 47:11
  • Dot Product 48:39
  • Extra Example 1: Vector Addition
  • Extra Example 2: Angle Between Vectors
  • Extra Example 3: Vector Addition