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Kinematic problem

  1. Jan 21, 2009 #1
    a body moves according to the following:
    ay=2-4t
    ax=-1
    vy=2t-2t2
    vx=1-t
    x0=2
    y0=3

    what is the tangential acceleration when t=1?
    what is the radius of curvature of the motion when t=1?

    aT=[tex]\vec{a}[/tex]dot[tex]\vec{v}[/tex]/|v|
    at t=1, [tex]\vec{v}[/tex]=0 so there is no tangential acceleration, how can this be true???

    the secon part of the question is also not making sence

    ar=v2/r, but here v=0 and ar=3 since there is no aT and ax=-1, ay=-2????
     
  2. jcsd
  3. Jan 21, 2009 #2

    LowlyPion

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