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Describing Motion

Describing Motion. http://www.youtube.com/watch?v=DRb5PSxJerM. Speed. The distance an object travels in a certain amount of time. Average speed – Total distance divided by total time Constant speed - Speed that does not change over time

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Describing Motion

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  1. Describing Motion

  2. http://www.youtube.com/watch?v=DRb5PSxJerM

  3. Speed • The distance an object travels in a certain amount of time. • Average speed – Total distance divided by total time • Constant speed - Speed that does not change over time • On your paper, describe an example of an object at a constant speed.

  4. What is the formula for calculating speed? Speed equals distance divided by time. S = d t

  5. Let’s Practice Calculating Speed • In your notebook, calculate this problem. Make sure you show all work! One side of a track is about 100 meters long. If it takes a person 20 seconds to run its length, how fast was the person running?

  6. Check Your Work One side of a track is about 100 meters long. If it takes a person 20 seconds to run its length, how fast was the person running? • Speed = Distance ÷ Time • Speed = 100 m ÷ 20 s • Speed = 5m/s Remember to label the UNITS!!

  7. Velocity • An object’s speed and direction at a given time • The wind is blowing 65 km/hr from the North. • On your paper, describe an example of velocity.

  8. Acceleration • A change in the direction or velocity of an object over time – which may be: • A change in speed • Starting • Stopping • Speeding up (positive acceleration) • Slowing down (negative acceleration) • A change in direction • Acceleration is caused by unbalanced forces. • On your paper, describe an example of an object accelerating.

  9. Our first super hero is Fire Hawk, he represents Speed. • Our second hero is Rocket Man, he represents Velocity. • For our final super hero we changed it up and made him a super villain, his name is Steam Roller. He represents Acceleration.

  10. http://marvel.com/games/play/31/create_your_own_superhero • http://www.heromachine.com/ • http://cpbherofactory.com/

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