Tukar unit berikut kepada m/s dan m/liter: b) Kelajuan maksimum sebuah kereta lumba F1 ialah 280 km/jam c) 30 km/liter

(1 km = 1000 m)

$$\frac{280 \text{ km}}{1 \text{ jam}} \times \frac{1000 \text{ m}}{1 \text{ km}} = \frac{280 \times 1000 \text{ m}}{1 \text{ jam}} = \frac{280000 \text{ m}}{1 \text{ jam}}$$

(1 jam = 60 minit = 3600 saat)

$$\frac{280000 \text{ m}}{1 \text{ jam}} \times \frac{1 \text{ jam}}{3600 \text{ s}} = \frac{280000}{3600} \frac{\text{m}}{\text{s}}$$

$$\frac{2800}{36} \frac{\text{m}}{\text{s}} = \frac{700}{9} \frac{\text{m}}{\text{s}} \approx 77.78 \frac{\text{m}}{\text{s}}$$

Kelajuan maksimum kereta lumba F1 ialah $\boxed{77.78 \text{ m/s}}$.

(1 km = 1000 m)

$$\frac{30 \text{ km}}{1 \text{ liter}} \times \frac{1000 \text{ m}}{1 \text{ km}} = \frac{30 \times 1000 \text{ m}}{1 \text{ liter}} = \frac{30000 \text{ m}}{1 \text{ liter}}$$

Kadar ialah $\boxed{30000 \text{ m/liter}}$.