The 20-mrn-diameter 2014-T6 aluminum rod is subjected to the triangular distributed

PY 205 Daniel Dougherty Week 2 Notes Chapter 3 - Kinematics in two or three dimensions  Vectors and scalars – velocity is how fast and in what direction the particle is moving o Magnitude – vector quantity o Scalar quantities are specified by numbers and units  Addition of vectors – graphical methods o  above D = displacement vectors o  above v = velocity vectors  Resultant displacement – represented by the arrow above the Dr o This should be smaller than the sum of the first displacement of the vector and the second displacement of the vector o The sum of the two vectors is called the resultant o Create a triangle by connecting the head and the tail of the two vectors  Three methods to find the two dimensional vectors o Addition  Connect the head and the tail by a line to create a triangle to measure the displacement between the two vectors o Subtraction  When you want to change the direction and move the second vector up so that the head and the tail are touching.  V1 – V2 = V1 + (-V2) Create a line o Scale of multiplication  Important to use if you want to change a vector to be negative (multiply by a factor of -1)  Makes the same magnitude but changes t