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Speed, Velocity, Acceleration

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Speed, Velocity, Acceleration

- The distance traveled by an object in a given amount of time.
- How fast an object is traveling.
- Speed = distance ÷ time

- The graph shows an object not changing its distance, so there is no motion.

Distance

Time

- The graph shows an object moving at a constant speed. (the graph is straight diagonal line)

Distance

Distance

Time

Time

- The graph shows an object NOT moving at a constant speed.

- An object’s speed and direction at a given instant.
- Speed + Direction

50 m/s to the East

- The graph below graphs an object’s velocity.
What is happening to the object’s velocity?

What is different about this graph from the others we have looked at?

Speed

Time

- Change in an object’s speed or direction (its velocity) over time.
- Speeds up, slows down
- Turns around, makes a turn

- The graph below shows an object accelerating (curved line on distance vs. time graph)

- The graph below shows an object accelerating (diagonal line on a speed vs. time graph)