関連ワード:  is average speed is a scalar quantity    is average speed is a vector quantity    is average velocity is a scalar quantity    average speed is a scalar quantity true or false    is average velocity is a vector quantity    average speed is a vector quantity true or false    instantaneous speed is a scalar quantity    average velocity is a scalar quantity true or false    is average speed a scalar or vector quantity    is average speed a scalar or vector  
結果 : is average speed is a scalar quantity