Mathematician and Scientist 1643 - 1727
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Transcript of Mathematician and Scientist 1643 - 1727
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Mathematician and Scientist
1643 - 1727
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Newton thought the universe worked like a
machine and that a few simple laws
governed it.
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OUCH! Hey, this must be
gravity!
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Help! Whiplash!
INERTIA Oops!
My bad!
Explain how inertia is displayed in each movement.
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What would happen if the person driving this car isn’t wearing a seat belt and hits
the brick war? Explain why using Newton’s 1st Law of Motion – “Inertia”.
http://www.physicsclassroom.com/Class/newtlaws/U2L1b.html
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The Second Law governs all acceleration and is really
very simple -- acceleration is produced when a force
acts on a mass. The greater the mass (of the object being accelerated) the
greater the amount of force needed (to accelerate the
object). http://www.physicsclassroom.com/mmedia/newtlaws/efar.html
With air resistance
As mass in
creases,
acceleratio
n has to
decrease
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Free fa
ll – N
o air
resistance
http://www.physicsclassroom.com/mmedia/newtlaws/efff.html
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Heavier objects require more force to move the same distance than do lighter objects. The Second Law,
however, gives us an exact relationship between force, mass,
and acceleration.
ACCELERATION = FORCE
MASS
FORCE = MASS X ACCELERATION
F = M * A
A = F
M
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Mike's car, which weighs 1,000 kg, is out of gas. Mike is trying to push the car to a gas
station, and he makes the car go 0.05 m/s/s. Using Newton's 2nd Law, you can compute how much force Mike is applying to the car. (hint: since you are trying to find force, use
the equation F=MA).
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BOB's van, which weighs 2,000 kg, is out of gas. BOB is trying to push the van to a gas
station, and he makes the car go 0.05 m/s/s. Using Newton's 2nd Law, you can compute how much force BOB is applying to the car. (hint: this problem is just like the previous
one).
http://www.physicsclassroom.com/Class/newtlaws/U2L3a.html
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Every acti
on has an
equal and opposit
e
reacti
on
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http://www.physicsclassroom.com/Class/newtlaws/U2L4a.html
WHACK! Ugh! ZOOM!
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A variety of action-reaction force pairs are evident in
nature
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http://www.intel.com/education/projects/wildride/learning/inspiration.htm
• Pair up with 1 student.
• As the teacher models, use Microsoft Word or Inspiration software to design a graphic organizer illustrating each law.
• Use the link below for models.