関連ワード:  is force a vector or a scalar quantity    is force a vector or a scalar    is force a vector or a scalar quantity menu    is velocity a vector or a scalar quantity    is velocity a vector or a scalar    is energy a vector or a scalar quantity    is energy a vector or a scalar    is velocity a vector or a scalar quantity menu    is magnetic force a vector or a scalar quantity    is magnetic force a vector or a scalar quantity class 7