(i) 10 kg is a scalar quantity because it involves only magnitude.(ii) 2 meters north-west is a vector quantity as it involves both magnitude and direction.(iii) 40∘is a scalar quantity as it involves only magnitude.(iv) 40 watts is a scalar quantity as it involves only magnitude.(v) 10−19 coulomb is a scalar quantity as it involves only magnitude.(vi) 20 m/s2 is a vector quantity as it involves magnitude as well as direction.