gravity man
TRANSCRIPT
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By: By: Pooja PatelPooja Patel
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Acceleration Facts
• Acceleration is the change in speed and directions (velocity)
• Constant acceleration is acceleration that doesn’t change with time
• Galileo was the first to show that all objects fall to earth with constant acceleration.
• In order to produce an acceleration, a force must be applied to the object.
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AccelerationAcceleration Examples ExamplesOne is when you One is when you are running and are running and change speed or change speed or directiondirection
Another one is Another one is when a bike is when a bike is going up hill going up hill changing speed changing speed and directionand direction
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Examples of Acceleration The car is moving
(duh!) at a certain velocity and when it changes speed or direction it is changing acceleration
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Acceleration Examples Your horse when it
is jumping it would move in to a canter from a trot
When a motorcycle is going full speed and then it encounters a stoplight! Yikes!
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Acceleration Example
The cart accelerating! Example of an example
when it goes up it is slow and when it goes down it is fast
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Acceleration Examples
The helicopter is (hopefully) changing speed and direction
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Acceleration Example
• This one is by far my favorite
• Michelle Kwan is changing speeds as she lifts her leg
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Click the screen for information on my project
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ExperimentExperiment
My dad took me My dad took me to my local ice to my local ice skating arena skating arena
My experiment My experiment was fun even was fun even though their though their were a lot of were a lot of people people
Click the screen Click the screen to see how I did to see how I did
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ProcedureProcedureQuestion: How much acceleration Question: How much acceleration does it take to jump 5 inches of does it take to jump 5 inches of the ground?the ground?
First I went to First I went to the ice skating the ice skating arena!arena!
Then I did my Then I did my jumps in jumps in different speeds different speeds to see what to see what speed takes me speed takes me 5 inches of the 5 inches of the ice ice
I got my dad to I got my dad to measure time. measure time. The distance The distance was measured was measured by a ice skating by a ice skating teacher teacher
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My ResultsMy Results
Going 0.5 feet per Going 0.5 feet per second was hard and second was hard and put a lot of pressure put a lot of pressure on my ankles but it on my ankles but it took me 5inches of took me 5inches of the groundthe ground
Going 0.25 was easy Going 0.25 was easy for me but it only for me but it only took me 3 inches off took me 3 inches off the groundthe ground
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Thanks for WatchingThanks for Watching
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Resources Resources
http://www.east-buc.k12.ia.us/03_04/http://www.east-buc.k12.ia.us/03_04/CE1/LSAS/lsas1.htmCE1/LSAS/lsas1.htm
www.www.wikipediawikipedia.org.org