関連ワード:  is work not a vector quantity    work is not a vector quantity true or false    is work done not a vector quantity    work is not a scalar quantity    why work is a scalar quantity not a vector quantity    which of the following is not a vector quantity work impulse displacement momentum    which of the following is not a vector quantity work    which of the following is not a vector quantity work force displacement velocity    is not a vector quantity    is work a vector quantity