Motion, Forces, & Newton's Laws Review

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Transcript

  • 1. Word Problems
  • 2. 1. Julie runs 0.99 laps on a 400 m track. What is her total distance travelled?
  • 3. 2. A cat runs 17 m into the street where a car runs over it. What is the cat’s total distance travelled? What is its displacement?
  • 4. If we’re trying to measure
    how fast a pitched ball is moving,
    then we need to find the distance
    it traveled and divide it by the
    total time it took to travel.
  • 5. First find the distance traveled:
  • 6. If the pitching mound is 60 ft. 6 in. from home plate, that is roughly 18.5 meters.
    v = d/t
    and in this case, distance is 18.5 meters
    So . . . Let’s say it took Chewy’s baseball
    0.5 seconds to reach home plate, then . . .
  • 7. What is the velocity of the baseball?
  • 8. 3. Jamie walks to the bathroom 36 m away. It takes her 12 seconds.
    What is her velocity?
  • 9. 4. Mrs. Lonnberg kicks a cat. Its speed increases from 2 m/s to 14 m/s.
    This took 3 seconds.
    What was the cat’s acceleration?
  • 10. 5. You punch someone.
    His face accelerates at 2 m/s2.
    The mass of his head is 12 kg.
    With what force did you punch him?
  • 11. Are this man’s forces balanced?
    How do you know?
  • 12. Are there balanced forces
    in our solar system?
    How do you know?
  • 13. Are these sky divers’ forces balanced?
    How do you know?
  • 14. What is Newton’s 1st Law
    otherwise known as?
  • 15.
  • 16.
  • 17. What is Newton’s 2nd Law?
  • 18. What two factors affect acceleration?
  • 19. What two factors affect acceleration?
  • 20.
  • 21.
  • 22. What is Newton’s 3rd Law?
  • 23.
  • 24.
  • 25.
  • 26. What law says that any two masses
    exert an attractive force on one another?
  • 27. How do you calculate the force of gravity between 2 objects?
  • 28.
  • 29. High FPS slow motion video compilation