1. A sprinter runner covers a distance of 100 m in 10 seconds. Find his speed in m $/ \mathbf{s}$, m/min, km/h.
1. 2) $100: 10=10(\mathrm{M} / \mathrm{s})$
2) $10 \times 60=600(\mathrm{m} / \mathrm{min})$
3) $600 \times 60=36000(\mathrm{m} / \mathrm{h})$
4) $36000: 1000=36$ (km/h).

Answer: $10 \mathrm{m} / \mathrm{s}, 600$ m/min, 36 km/h.