A car travels 470 km in 5 hours. What is its average speed?
The average speed is 94 km/h.
How to work it out
- 1
Write down what you know: distance d = 470 km, time t = 5 hours. You are asked for the speed v.
- 2
Use the formula speed = distance ÷ time:
- 3
Answer with the unit: 94 km/h.
- 4
The same formula rearranged: distance = speed × time (94 × 5 = 470 km) and time = distance ÷ speed (470 ÷ 94 = 5 hours).
LaTeX source of the formulas on this page
\[ v = \frac{d}{t} = \frac{470}{5} = 94\ \text{km/h} \]
\[ v = \frac{d}{t} = \frac{470}{5} = 94 \]How far at 94 km/h
| Time | Distance |
|---|---|
| 0.5 hours | 47 km |
| 1 hour | 94 km |
| 2 hours | 188 km |
| 3 hours | 282 km |
| 4 hours | 376 km |
| 5 hours | 470 km |
Questions
What is the speed if a car travels 470 km in 5 hours?
The average speed is 94 km/h.
How far does it go in 3 hours at that speed?
282 km.