Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Motion etc


Published on

Published in: Education, Business, Technology

Motion etc

  1. 1. Physics Motion, Speed, Velocity & Acceleration
  2. 2. Motion 1  What is motion? How do you know if something is “in motion?”
  3. 3. Motion 2  Motion is the changing distance between two objects.  You can tell if something is “in motion” based on a reference point.  Reference point: A place or object used for comparison to determine if something is in motion.
  4. 4. Motion 3  Are we moving right now? Yes? No?  How do you know?  What is your reference point? **Technically, we are doing both moving AND not moving depending on your reference point!
  5. 5. Speed 1  What is speed?  How do you know what “speed” you are going?  Is speed fast or slow? Or both?
  6. 6. Speed 2  Speed is the amount of distance an object travels in any given amount of time.  We calculate speed like this: Speed = Distance / Time Average speed is just: total distance / total time
  7. 7. Velocity 1  What is velocity?  Is velocity the same thing as speed?  How do I know what an objects velocity is?
  8. 8. Velocity 2  Velocity is speed with direction.  When dispatch contacts a police officer to let them know where a suspect is, they will give them a velocity: “the perpetrator is on walnut st. traveling at 40mph north.”  What else do we use velocity to describe?
  9. 9. Velocity 3  Change in velocity can be due to two things:  1. Change in speed  2. Change in direction  (it can be one or both)
  10. 10. Acceleration 1  What is acceleration?  What does it mean to accelerate?  What is the opposite of accelerate?
  11. 11. Acceleration 2  Acceleration is the rate at which velocity changes with time.  If velocity requires both speed and direction, then acceleration also requires both speed and direction.  Therefore… acceleration refers to increasing speed, decreasing speed or changing direction!
  12. 12. Acceleration 3  Increasing speed: When an objects speed increases, it is accelerating.  Decreasing speed: When an objects speed decreases, it is deccelerating or has negative acceleration.  Changing direction: If the direction changes so does the acceleration- even if the speed stays the same!!!
  13. 13. Acceleration 4  Calculating acceleration: you must figure out the change in velocity per unit time. Acceleration= Final velocity - Initial Velocity time The units used for Acceleration are meters per second per second or m/s2