83. The vehicle speed (wheel radius R = 35 cm), moving ravnozamedlenno for time Δt = 2 decreased from υ1 = 65 km / h to υ2 = 46 km / h. Determine the angular acceleration ε and the number of complete revolutions N wheel during this time.

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