The newton unit of force is equivalent to

(a) \(\mathrm{kg} \cdot \mathrm{m} / \mathrm{s}\),

(b) \(\mathrm{kg} \cdot \mathrm{m} / \mathrm{s}^{2}\),

(c) \(\mathrm{kg} \cdot \mathrm{m}^{2} / \mathrm{s}\),

(d) none of the preceding.