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"In theory, theory and practice are the same. In practice, they are not." ..."Albert Einstein (1879~1955, Mathematical physicist, Nobel Prize 1921-Physics)"

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 Author Topic: particle in 3-D  (Read 8867 times) 0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
kushal
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 « Embed this message on: April 09, 2007, 01:38:25 am »

when a particle moves in x,y,z axis then how does tthe position vectors or values of x,y,z changes? i have been searching this to study galilean and lorentz transformations but unable to find one. if any of you wanna discuss, mail at mr.kushal.gupta@gmail.com  v can fix a time to chat. thankyou
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Fu-Kwun Hwang
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 « Embed this message Reply #1 on: April 09, 2007, 05:44:22 pm »

The position of x will be determined by vx: (similar conditions for y,z)

x(t)=x(0)+vx *t (if velocity is a constant value).
x(t+dt)=x(t)+vx(t)*dt (if velocity is not a constant, and dt is a small time interval).
The complete integration can be calculated with numerical method. For example: I use Runge-Kutta 4th order method for all the simulation in this web site.
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"In theory, theory and practice are the same. In practice, they are not." ..."Albert Einstein (1879~1955, Mathematical physicist, Nobel Prize 1921-Physics)"