68. The radius vector of a material point changes with

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Uploaded: 13.08.2015
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68. The radius vector of a material point changes with time according to the law r = 4t2i + 3tj + 2k. Determine: 1) speed υ; 2) acceleration a; 3) The modulus of the velocity at time t = 2 s.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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