Chapter 2, Section 1 Notes

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Chapter 2, Section 1 Notes

  1. 1. Chapter 2.1Motion in One Dimension
  2. 2. Branches of Physics• Dynamics – branch of study concerned with the study of motion• Kinematics – part of dynamics that describes motion without regard to its causes
  3. 3. Velocity• Average velocity is defined as displacement divided by the time interval during which the displacement occurs• SI unit is meters per second (m/s)• Can be positive or negative
  4. 4. Displacement and Velocity• Defined as a change in position• Not always equal to distance traveled• Can be positive or negative• Calculated by final position – initial position –Delta X
  5. 5. Velocity and Speed• Velocity describes motion with both a direction and a numerical value (magnitude)• For any position vs. time graph, we can determine the average velocity by drawing a straight line between any two points on the graph• Speed has no direction, only magnitude• Speed = distance traveled divided by the time interval for the motion
  6. 6. • Instantaneous velocity -

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