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Sunday, January 23, 2011

Laws of Motion and Systems of Equations

COW #19
Force and Motion Practice:
Law 1- Inertia- An object at rest has a tendency to stay at rest, an object in motion has a tendancy to stay in motion unless acted upon by an outside force.  
Energy Skate Park (make sure to click on Show Pie Chart and Track Friction)
Law 2- Force = Mass * acceleration 
Robot Moving Company (Click on the top tab for RMC, then pay attention to the mass of the object and use the arrows to put the object in the door.  The longer you hold the arrow, the more force you apply.)
Law 3: For every action there is an equal and opposite reaction.
Lunar Landing: (Click the arrows to rotate the lander.  Use the space bar to apply thrust.  Hit once to start.  Hit again to stop.) 
Scatter Plots:
Systems of Equations: 
VIDEO SOLVING BY GRAPHING


This week's IXL skills
Positive x positive = positive
Negative x negative = positive
Positive x Negative = negative
p8 · p3 = p11   To multiply exponents, add the exponents

21 comments:

  1. if there are two objects with the same mass going at different velocities,them object with the higher velocity will have less of a reaction from impact than the object with a lower velocity (Law 3 action, reaction).
    -Iris Tinsley

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  2. I noticed that the box is harder to move on dirt than ice. On the ice the box took less force to move becuase the ice had no Friction. Love,Crystal Lynn 8b

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  3. Myles H-P learned that landing a lunar thingy is hard. Also that kinetic energy decreases when there is more friction

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  4. i learned that if two cars are heading at each other at the same speed but one car has more mass the bigger one will push the other car back
    santiago

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  5. to multiply with exponents,add the exponents.

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  6. the cars bounce off each other they dont just crash
    sam jessup

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  7. i learned that for an object in space (with no gravitational pull) will continue in one direction until forces such as gravity and thrust act against it. a space ship would hit any object it started toward if it has no fuel for thrust.

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  8. In order to eliminate systems of equations you have to make sure the y and x cancel out by adding and subtracting
    *Siena*

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  9. Lynsey Tiller said.....

    the more mass the object had the more force you need to apply.

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  10. when the start of a velocity is both positive they are going to be going in the positive direction

    - Aurianna B.

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  11. multipling decimals are just adding them

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  12. On the Energy Skate Park jupiter has more gravity than the moon and the earth. So much so that on jupiter it will not even let the character move up.
    Carter

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  13. When you use the elimination method, you don't have to worry about the letters x and y being there, you just have to focus on eliminating their variables !
    -KC Murphy

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  14. one thing i learned is laws of motion and astronomy are hand in hand

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  15. Simon,
    when i tested the car simulator i realized that when the heavier car hit the smaller car while both cars were going at the same speed the bigger car pushed the car.

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  16. an object in space will continue in 1 direction unless something pushes or pulls it
    Korey Silas

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  17. i learned that if the car that had more mass it wouldnt bounce back as much as one with less mass. also kinetic energy decreases when there is more friction

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  18. When the Velocity on one is positive and the other is negative their reaction is the same :)

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  19. i learned for every action, there is a an equal and opposite reaction.
    (Amari smith)

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  20. I learned that the more acceleration you add to an object the faster it will go and the more mass it has will also show how fast it goes because of the weight-Tyler

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  21. i learn to to multiply with exponents,add the exponents

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