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Physics Electric and Magnetic Fields
Physics Electric and Magnetic Fields
HS PS3-5
HS PS3-5
Biology
LS2-1 Factors Affecting Ecosystems
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PS2 1 Newton's Second Law
Project Zero THINKING ROUTINES
Phenomenon
Watching the direction a spinning wrench travels WIS
What did you see in the movie?
What are you curious about?
What questions do you have?
Motion:
Force and motion
Friction
Acceleration
EXTRA: PULLEYS
Pulley Inquiry activity
Aerospace applications: Pulleys WIS
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HS-PS2-1 Motion and Stability: Forces and Interactions
Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration.
Performance Expectation
Grade: High School (9-12)
Prior Knowledge/Preview
Simple machine review Idaho Public TV
Newton's Law Review and the Hero engine WIS
Forces of Flight: Vertical Take off Smithsonian Learning Lab
Aerospace CONNECTIONS:
Applications and examples
Pulleys WIS
and part ii 120 ton lift start at 1 minute NASA
Newton's 2nd Law demo in Space NASA
Flight control including pulleys FAA
Measuring acceleration in coronal ejections NASA
Newton's Laws in Space Christa McAuliffe Lesson NASA
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Inquiry science
Printable activity
Energy for Life: Cell Respiration activity Go To Lessons 4.3 & 4.4 CK-12
On-line activity
Scroll to the questions in the Cellular Respiration Summary after seeing the videos Texas Gateway
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LAB activities
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Lab #1 Measuring forces
Lab #2 Launch forces
Lab #3 Projectile Motion
Lab #4 Pulley use: the bosun's chair WIS
Lab #5 Pulley inquiry lab--link will be added Washington International School
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EXTENSION material for the curious
PhET Forces and Motion
PhET simulation on projectile motion
Projectile motion with Barney WIS
Part ii Pulley calculations WIS
To consider after you have investigated Newton's Laws:
Why did Newton, an Englishman, write in Latin?
Who would be able to read his Principia Mathematica? Is this limited access fair? Why/whynot?
Newton's First Law
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An object either remains at rest or continues to move at a constant velocity, unless acted upon by a force
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Sum of forces = 0 Change in velocity dv/dt = 0
An object that is at rest will stay at rest unless a force acts upon it.
An object that is in motion will not change its velocity unless a force acts upon it.
The property where massive bodies resist changes in motion is called inertia
PS2 4 Gravity and Coulomb's Law
Project Zero THINKING ROUTINES
Phenomenon
Car Crash Physics-the G-force in video at 7.5 minutes IIHS
What did you discover that was new about car crashes and the G-forces?
What surprised you and why?
Car crash 9/17/07
Wikimedia Commons
Damnsoft09 CC 3.0
Investigate Newton's Law of Universal Gravitation relating to objects with different masses
Discover the significance of Coulomb's Law relating to electrostatic charges
Compare and contrast the mathematical formulas of the two laws
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HS-PS2-4 Motion and Stability: Forces and Interactions
Use mathematical representations of Newton’s Law of Gravitation and Coulomb’s Law to describe and predict the gravitational and electrostatic forces between objects.
Performance Expectation
Grade: High School (9-12)
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Inquiry science
Printable activity
under development
On-line activity
Coulomb's Law simulation (change charge with arrows, change distance by moving strings) also Change charge and distance AND Coulomb's Law changing numerical values Physics Aviary
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LAB activities follow safety guidelines above and in the activity
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Lab #1 Investigating Gravity
Lab #2 Coulomb's Law Lab UCLA
Lab #3 Universal Gravitation Activity PhET
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EXTENSION material for the curious
Using the universal law of gravitation to determine the mass of black hole Cyg X-1 NASA
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The Science of Coulomb's Law
The electrostatic force between two stationary charges q1 and q2
If q1 and q2 have opposite charges, the force is attractive and F is negative
If q1 and q2 have like charges, the force is repulsive and F is positive
The constant, k, in Coulomb’s law is much bigger than the constant, G, in the Universal Gravitational law, so the attraction between electrostatic forces is much larger than the gravitational force between objects
Coulomb’s constant
ke = 8.99 × 109 Nm^2/C^2
Prior Knowledge/Preview
The force of gravity S Soltis Smithsonian Learning Lab
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Bitesize online gravity activities BBC
Aerospace CONNECTIONS:
Applications and examples
Investigating different gravity NASA
Center of Gravity of Orion Spacecraft Splashdown NASA
Mass of Jupiter Simulation PSI Physics at NJCTL
Earth’s gravity is reshaping the Moon Smithsonian Magazine
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The Science of Universal Gravitation
Objects dropped near the surface of the Earth fall to the ground.
Stone-age folk will have realized this
Galileo (1564-1642) pointed out that heavy and light objects fall toward the earth at the same rate (so long as air resistance is the same for each)
Isaac Newton (1643-1727) developed his theory of universal gravitation—applying to objects falling to the Earth but also to objects in orbit—the Moon orbiting the Earth
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Sir Isaac Newton defined this attraction mathematically. The force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers
M is one mass, m is the second mass, and r is the distance between the two masses
This is known as the inverse square law
The constant of proportionality G is the gravitational constant, M is one mass, m is the second mass, and r is the distance between the two masses.
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G was determined by Henry Cavendish in 1798
