Speed, Distance, and Time Formula
The relationship between speed, distance, and time is one of the most practical formulas, used in physics, travel planning, and everyday calculations.
Speed Formula
Speed = Distance / Time
Where:
- S = Speed (km/h, mph, m/s)
- D = Distance covered
- T = Time taken
Step-by-Step:
- 1
Identify known values
Determine which two of speed, distance, and time you know.
- 2
Choose the formula
Speed = D/T, Distance = S×T, Time = D/S.
- 3
Ensure consistent units
Make sure distance and time units match the speed unit.
Worked Examples:
Car journey
Distance: 240 kmTime: 3 hours
Result: 80 km/h
Speed = 240/3 = 80 km/h
Running
Speed: 10 km/hTime: 0.5 hours
Result: 5 km
Distance = 10 × 0.5 = 5 km