Space time structure, Mechanical Engineering

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Space Time Structure

If the position of the particle P changes, the differential change in its position vector r is, in general, given by,


d r = dx i + dy j + dz k                            (i)

The instantaneous velocity and acceleration of P, in Cartesian system therefore are


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= vx i + vy j + vz k                                  (ii)

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= ax i + ay j + az k                                 (iii)


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