Four Chapter 3

• Because velocity is a vector, acceleration must be a vector.

• When motion occurs on a plane, then velocity change may involve:
  • magnitude change
  • direction change
  • both

• Note that this last equation implies vector subtraction.

• For uniform circular motion, magnitude is constant and direction changes constantly. The number of degrees the direction changes by, is equal for equal time intervals.

• Centripetal Acceleration - Acceleration towards the center of the circle produced by circular motion (a_c).

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October 30, 2013