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Newton's 2nd law help needed right now

  1. Nov 16, 2008 #1
    Newton's 2nd law help needed right now!!

    1. The problem statement, all variables and given/known data
    data
    Trial distance force(N) time(S)
    1 5 15 6.13
    10 15 8.57
    15 15 11.09
    2 5 15 8.40
    10 15 12.98
    15 15 16.39
    3 5 15 6.82
    10 15 9.52
    15 15 12.57
    Trial distance force(N) time(S)
    1 5 20 5.63
    10 20 8.07
    15 20 9.92
    2 5 20 6.04
    10 20 8.98
    15 20 11.45
    3 5 20 5.62
    10 20 8.02
    15 20 10.09

    2. Relevant equations
    1. Until time of Galileo, people believed that a constant force is required to produce a constant speed. Do your observation confirm or reject this notion?
    2. What happnes to the speed as you proceed farther and farther along the measured distances?
    3. What happnes to the rate of increase in speed - the acceleartion - as your proceed farther and farther along the measured distances?
    4. When the force is the same, how does the acceleration depend upon the masS?
    5. When the mass of the skater is the same, how does the acceleration depend upon the force?
    6. Suppose a 3-N force is applied to the skater and no movement results. How can this be explained?



    3. The attempt at a solution
    1. .. I have no idea.
    2. The speed accelerates as I proceed farther and farther.
    3. .. I have no idea. Isn't this same as number 2 tho?
    4. Whoever has more mass has lower acceleration compare to the one who has lower mass.
    5. More force will shorter the rates of acceleration.
    6. No idea.

    Well, guys..
    I tried my best.
    Some of them, I do not know.
    Can you help me with the problems that I didn't know and check the answers for me?
    Thank you so much
     
  2. jcsd
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