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2-1 Describing Motion

2-1 Describing Motion. We will be learning: The difference between distance and displacement. The difference between speed and velocity. Motion. Need a frame of reference to determine motion. Distance – how far something has moved; measured in meters (m)

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2-1 Describing Motion

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  1. 2-1 Describing Motion We will be learning: The difference between distance and displacement. The difference between speed and velocity.

  2. Motion Need a frame of reference to determine motion. Distance – how far something has moved; measured in meters (m) Displacement – how far something has moved in relation to its starting point.

  3. Displacement

  4. Speed • Speed = distance (m) s=d d x s=t time (s) t t x s=d Average speed = total distance total time Used when discussing speed for trips

  5. Instantaneous Speed – speed you are traveling at that instant. (look at the speedometer)

  6. Graphing Motion • Distance on the vertical axis • Time on the horizontal axis • The steeper the slope the faster the movement.

  7. Velocity • Change in either speed or direction. • If you are going in a circle or on a race track, you are constantly changing velocity due to the fact that you are constantly changing direction.

  8. Homework • 2-1 p. 46 #1, 2, 3, 5, 6, 7

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