Решение задачи по физике раздел 46 пункт 67 механика

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)