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Motion

Motion. Motion. Motion - the change in the position of an object with respect to time and its reference point Motion is RELATIVE Reference point/ frame of reference : a point/object that is not moving. Reference Point and Relative Motion. Example:

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Motion

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  1. Motion

  2. Motion • Motion- the change in the position of an object with respect to time and its reference point • Motion is RELATIVE • Reference point/ frame of reference: a point/object that is not moving

  3. Reference Point and Relative Motion Example: • If you are sitting on a train looking at your neighbor, neither of you seem to be moving • If you look out the window at people standing on the side, they seem to be moving backwards • If the people on the side are looking at you, you seem to be moving forward

  4. Describing Motion • Distance- the length between two points • Units: meters, kilometers, etc. • Time

  5. Speed • Speed- is the distance traveled per unit of time • Units: m/s, km/s, etc. Formula: S = D/t • Solve for other variables: D= s*t t= D/s S= speed D = distance t= time

  6. Average Speed • The total distance divided by the total time

  7. Instantaneous Speed • The speed at any given instant

  8. You must always show your work and units!!  ALWAYS METRICS No answer is complete without units!

  9. Let’s try one! Calculate the speed of a dog running through a field if he is covering 23.7 meters in 54 seconds. Given: Formula: Find: Work Space:

  10. If a cross country runner covers a distance of 347 meters in 134 seconds what is her speed? Given: Formula: Find: Work Space:

  11. Velocity Velocity- The speed and direction an object is moving in Units: speed and a direction Example: The car’s velocity is 60 km/hr EAST

  12. Try This: Calculate the velocity of a dog running north through a field if he is covering 23.7 meters in 54 seconds. Given: Formula: Find: Work Space:

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