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# Motion, Speed, Velocity and Acceleration Notes

## on Feb 06, 2012

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## Motion, Speed, Velocity and Acceleration NotesPresentation Transcript

• Motion Speed Velocity Acceleration
• Vocabulary
• Motion: A change in position
• Depends on reference point
• Is the mom moving relative to the dad?
• Is the mom moving if you were on the side of the road?
• Speed
• The distance an object moves in a certain amount of time
• Formula:
• Unit for Speed
• Since the formula is
• Then the unit for speed must be a unit of distance divided by a unit of time.
• For example:
• km/h
• m/s
• Speed
• Look familiar?
• Knowing any of the 2 variables, you can solve for the 3 rd .
• Calculate Speed
• If you went to a Rihanna concert in Boston (100 km away) and it took you 2 hours, what was your average speed?
• Use the 5 step method
• List formula
• List known and unknown values
• Plug into formula
• Show the math
• Velocity
• How far an object moves in a given amount of time AND the direction
• +
• What was your velocity to the concert?
• Acceleration
• A change in speed OR direction
• Speeding up
• Slowing down
• Changing direction
• Graphing Speed Distance (km) 25 50 50 50 100 Time (min) 20 30 40 50 60 Distance (km) 25 50 75 100 125 Time (min) 20 40 60 80 100 Distance (km) 25 40 55 65 75 Time (min) 5 15 30 45 70 Distance (km) 25 50 75 100 125 Time (min) 25 45 60 70 75
• Interpreting Graphs
• The shape, or slope, of the line tells the story!
• Interpreting a Graph
• Now you try!
• What does each graph tell you?
• Tell the Story!
• What story does the graph tell you as you ride your bike to your friend’s house?
•