Classify the following measures as scalars and vectors.
(i) $10 \mathrm{~kg}$
(ii) 2 metres north-west
(iii) $40^{\circ}$
(iv) 40 watt (v) $10^{-19}$ coulomb
(vi) $20 \mathrm{~m} / \mathrm{s}^{2}$
(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) $20 \mathrm{~m} / \mathrm{s}^{2}$ is a vector quantity as it involves magnitude as well as direction.
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