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Solving a problem in physics section 46 point 67 mechan
67. The radius vector of a material point changes with time according to the law r = t3i + 3t2j, where i, j - the unit vectors x and y axes. Determine at time t = 1: 1) unit rate; 2) acceleration module.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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