The Speed, Distance & Time Triangle
The relationship between speed, distance and time is one of the most fundamental in physics and everyday life. The three variables are linked by these formulas:
Three Core FormulasSpeed = Distance ÷ Time
Distance = Speed × Time
Time = Distance ÷ Speed
Example: 150 km at 60 km/h → Time = 150 ÷ 60 = 2.5 hours
Distance = Speed × Time
Time = Distance ÷ Speed
Example: 150 km at 60 km/h → Time = 150 ÷ 60 = 2.5 hours
Unit Conversions for Speed
| Speed | km/h | m/s | mph |
|---|---|---|---|
| Walking pace | 5 km/h | 1.39 m/s | 3.1 mph |
| Cycling | 20 km/h | 5.56 m/s | 12.4 mph |
| City road limit | 50 km/h | 13.9 m/s | 31.1 mph |
| Highway limit | 100 km/h | 27.8 m/s | 62.1 mph |
| Train (Vande Bharat) | 160 km/h | 44.4 m/s | 99.4 mph |
Practical Uses
- Road trips: How long will it take to drive 450 km at 80 km/h? → 5.625 hours
- Fitness: You ran 5 km in 28 minutes — what was your pace? → 10.7 km/h
- Train/flight: A 2,000 km flight takes 2.5 hours — what speed? → 800 km/h
- Physics problems: Solve kinematic equations for school and competitive exams
⚡ Solve any speed, distance or time problem instantly
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