A car travels 320 miles in 1 hour. What is its average speed?
The average speed is 320 mph.
How to work it out
- 1
Write down what you know: distance d = 320 miles, time t = 1 hour. You are asked for the speed v.
- 2
Use the formula speed = distance ÷ time:
- 3
Answer with the unit: 320 mph.
- 4
The same formula rearranged: distance = speed × time (320 × 1 = 320 miles) and time = distance ÷ speed (320 ÷ 320 = 1 hour).
LaTeX source of the formulas on this page
\[ v = \frac{d}{t} = \frac{320}{1} = 320\ \text{mph} \]
\[ v = \frac{d}{t} = \frac{320}{1} = 320 \]How far at 320 mph
| Time | Distance |
|---|---|
| 0.5 hours | 160 miles |
| 1 hour | 320 miles |
| 2 hours | 640 miles |
| 3 hours | 960 miles |
| 4 hours | 1280 miles |
| 5 hours | 1600 miles |
Questions
What is the speed if a car travels 320 miles in 1 hour?
The average speed is 320 mph.
How far does it go in 3 hours at that speed?
960 miles.