24/7 Customer Service 1-866-236-8417 Need Help? 1-866-236-8417

Reply
Results 1 to 17 of 17
  1. #1
    The OG of Freshness RockNvEgas's Avatar
    Join Date: Sep 2007
    Stats: 6'1", 190 lbs
    Posts: 1,311
    BodyPoints: 8852
    Rep Power: 1868
    RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000)
    Visit RockNvEgas's BodySpace
    RockNvEgas is offline

    This Physics Question f'ing Blows!

    1A. Which of the curves labeled A to D on the graph (Part A figure) could be a plot of v_x(t), the velocity of the object in the x direction as a function of time?


    1B. Which of the curves labeled A to D on the graph (Part B figure) could be a plot of x(t), the position of the object along the x axis as a function of time?


    EDIT: First Part:

    Two forces are exerted on an object of mass m in the x direction as illustrated in the free-body diagram. (Intro 1 figure) Assume that these are the only forces acting on the object.

    Last edited by RockNvEgas; 03-16-2009 at 06:57 PM.
    Go Blue!
    Detroit RoCk City
    *** Wings 08 Cup Champs ***
    Reply With Quote

  2. #2
    The OG of Freshness RockNvEgas's Avatar
    Join Date: Sep 2007
    Stats: 6'1", 190 lbs
    Posts: 1,311
    BodyPoints: 8852
    Rep Power: 1868
    RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000)
    Visit RockNvEgas's BodySpace
    RockNvEgas is offline
    Halp!
    Go Blue!
    Detroit RoCk City
    *** Wings 08 Cup Champs ***
    Reply With Quote

  3. #3
    Brolosopher soloS's Avatar
    Join Date: Aug 2008
    Location: Canada
    Age: 23
    Stats: 6'1", 190 lbs
    Posts: 14,389
    Rep Power: 1638
    soloS is just really nice. (+1000) soloS is just really nice. (+1000) soloS is just really nice. (+1000) soloS is just really nice. (+1000) soloS is just really nice. (+1000) soloS is just really nice. (+1000) soloS is just really nice. (+1000) soloS is just really nice. (+1000) soloS is just really nice. (+1000) soloS is just really nice. (+1000) soloS is just really nice. (+1000)
    Visit soloS's BodySpace
    soloS is offline
    the answer is 42
    “Ask not for a lighter burden, but ask for broader shoulders.”
    Reply With Quote

  4. #4
    Banned Arbex's Avatar
    Join Date: Dec 2007
    Location: United States
    Age: 28
    Stats: 5'8", 175 lbs
    Posts: 6,078
    BodyPoints: 2961
    Rep Power: 0
    Arbex is just really nice. (+1000) Arbex is just really nice. (+1000) Arbex is just really nice. (+1000) Arbex is just really nice. (+1000) Arbex is just really nice. (+1000) Arbex is just really nice. (+1000) Arbex is just really nice. (+1000) Arbex is just really nice. (+1000) Arbex is just really nice. (+1000) Arbex is just really nice. (+1000) Arbex is just really nice. (+1000)
    Visit Arbex's BodySpace
    Arbex is offline
    C
    D
    Reply With Quote

  5. #5
    Registered User t3nkenx's Avatar
    Join Date: Jan 2009
    Age: 33
    Posts: 296
    Rep Power: 221
    t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50) t3nkenx will become famous soon enough. (+50)
    t3nkenx is offline
    A
    B
    Reply With Quote

  6. #6
    Registered User colt.45's Avatar
    Join Date: Sep 2007
    Age: 25
    Posts: 11,202
    BodyPoints: 11537
    Rep Power: 1049
    colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500) colt.45 is a jewel in the rough. (+500)
    Visit colt.45's BodySpace
    colt.45 is offline
    we need the preamble first, not just the graphs
    Reply With Quote

  7. #7
    Registered User electricjaguar's Avatar
    Join Date: Jun 2007
    Location: Washington, United States
    Age: 30
    Stats: 5'10", 224 lbs
    Posts: 174
    BodyPoints: 4580
    Rep Power: 119
    electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10) electricjaguar is on a distinguished road. (+10)
    Visit electricjaguar's BodySpace
    electricjaguar is offline
    edit: need more info
    Reply With Quote

  8. #8
    Blue Belt Beardman JewMasterKrunk's Avatar
    Join Date: Jan 2006
    Location: Orlando, Florida, United States
    Age: 27
    Stats: 5'9", 195 lbs
    Posts: 4,201
    BodyPoints: 9031
    Rep Power: 1078
    JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500)
    Visit JewMasterKrunk's BodySpace
    JewMasterKrunk is offline
    first one is D.

    i think the second one is A.

    im tired.
    Reply With Quote

  9. #9
    The OG of Freshness RockNvEgas's Avatar
    Join Date: Sep 2007
    Stats: 6'1", 190 lbs
    Posts: 1,311
    BodyPoints: 8852
    Rep Power: 1868
    RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000) RockNvEgas is just really nice. (+1000)
    Visit RockNvEgas's BodySpace
    RockNvEgas is offline
    posted first part
    Go Blue!
    Detroit RoCk City
    *** Wings 08 Cup Champs ***
    Reply With Quote

  10. #10
    Registered User astarr22's Avatar
    Join Date: May 2007
    Location: United States
    Age: 28
    Stats: 6'3", 181 lbs
    Posts: 975
    BodyPoints: 2887
    Rep Power: 218
    astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50) astarr22 will become famous soon enough. (+50)
    Visit astarr22's BodySpace
    astarr22 is offline
    B for velocity
    D for position

    If those forces are constantly applied, velocity will decrease linearly and position will be parabolic. I think this is right. Not sure why the position graph goes up at first.
    I don't wanna be a product of my environment; I want my environment to be a product of me.
    Reply With Quote

  11. #11
    Registered User dealmaster's Avatar
    Join Date: Aug 2008
    Age: 27
    Stats: 5'5", 157 lbs
    Posts: 257
    Rep Power: 128
    dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10) dealmaster is on a distinguished road. (+10)
    Visit dealmaster's BodySpace
    dealmaster is offline
    The two forces can be added together, so the net force will be to the left. This means there is a constant acceleration to the left. This implies a linear velocity (with a negative slope) and a quadratic position, also with a negative derivative. The two lines which represent this are B and D.
    Go Steelers!

    Workout Journal:
    http://forum.bodybuilding.com/showthread.php?t=117122091
    Reply With Quote

  12. #12
    Jags Are Bake charity4thepoor's Avatar
    Join Date: Sep 2007
    Location: Tallahassee, Florida, United States
    Stats: 5'11", 171 lbs
    Posts: 25,735
    BodyPoints: 4008
    Rep Power: 16971
    charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000) charity4thepoor is a splendid one to behold. (+10000)
    Visit charity4thepoor's BodySpace
    charity4thepoor is online now
    i think its
    B
    D
    velocity is the derivative of position. you know that if velocity is a -x then the position has to be -x^2/2 which would make it D for the position.
    Last edited by charity4thepoor; 03-16-2009 at 07:14 PM.
    **** Football Crew
    TB Lightning
    Reply With Quote

  13. #13
    Banned thedestro's Avatar
    Join Date: Aug 2008
    Posts: 3,213
    Rep Power: 0
    thedestro is not very helpful. (-500) thedestro is not very helpful. (-500) thedestro is not very helpful. (-500) thedestro is not very helpful. (-500) thedestro is not very helpful. (-500) thedestro is not very helpful. (-500) thedestro is not very helpful. (-500) thedestro is not very helpful. (-500) thedestro is not very helpful. (-500) thedestro is not very helpful. (-500) thedestro is not very helpful. (-500)
    thedestro is offline
    Originally Posted by dealmaster View Post
    The two forces can be added together, so the net force will be to the left. This means there is a constant acceleration to the left. This implies a linear velocity (with a negative slope) and a quadratic position, also with a negative derivative. The two lines which represent this are B and D.
    this r correct.
    Reply With Quote

  14. #14
    Registered User lurkr's Avatar
    Join Date: Mar 2008
    Location: Australia
    Age: 26
    Posts: 1,130
    Rep Power: 0
    lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500)
    Visit lurkr's BodySpace
    lurkr is offline
    A
    A
    Reply With Quote

  15. #15
    Blue Belt Beardman JewMasterKrunk's Avatar
    Join Date: Jan 2006
    Location: Orlando, Florida, United States
    Age: 27
    Stats: 5'9", 195 lbs
    Posts: 4,201
    BodyPoints: 9031
    Rep Power: 1078
    JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500) JewMasterKrunk is a jewel in the rough. (+500)
    Visit JewMasterKrunk's BodySpace
    JewMasterKrunk is offline
    Originally Posted by astarr22 View Post
    B for velocity
    D for position

    If those forces are constantly applied, velocity will decrease linearly and position will be parabolic. I think this is right. Not sure why the position graph goes up at first.
    you're right for the first one. i didnt think about the axes.
    for the second one, you're probably right, i noticed that too.
    Reply With Quote

  16. #16
    Registered User lurkr's Avatar
    Join Date: Mar 2008
    Location: Australia
    Age: 26
    Posts: 1,130
    Rep Power: 0
    lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500) lurkr is not very helpful. (-500)
    Visit lurkr's BodySpace
    lurkr is offline
    Acdc
    Reply With Quote

  17. #17
    Banned Jismy's Avatar
    Join Date: Jul 2008
    Location: Ottawa, ON, Canada
    Age: 26
    Stats: 6'1", 181 lbs
    Posts: 1,542
    Rep Power: 0
    Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500) Jismy is a glorious beacon of knowledge. (+2500)
    Visit Jismy's BodySpace
    Jismy is offline
    the forces are unbalanced and unchanging in negative direction, therefore constant negative acceleration so it has to be B for 1A. Since it's negative acceleration -> D for 1B
    Last edited by Jismy; 03-16-2009 at 08:10 PM.
    Reply With Quote

Reply

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts