Motion Calculator
Solve for Speed, Distance, or Time instantly. Select the variable you want to find and enter the other two known values.
Result
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The SDT Triangle
A simple way to remember these formulas is the Speed-Distance-Time Triangle. To find a specific variable, cover it in the triangle and perform the remaining operation:
- Distance = Speed $\times$ Time
- Speed = Distance $\div$ Time
- Time = Distance $\div$ Speed
This calculator handles the division and multiplication for you, ensuring consistent units across your calculations.
Frequently Asked Questions
What units should I use? +
Consistency is key. If your distance is in kilometers and time is in hours, your speed will be in $km/h$. If distance is in meters and time in seconds, speed will be in $m/s$. Make sure you don't mix units (like $km$ and $seconds$) without converting first!
Speed vs. Velocity? +
In basic physics, Speed is a scalar quantity (just the rate of motion), while Velocity is a vector quantity (speed with a specific direction). This tool calculates average speed.
How do I handle "minutes"? +
If you have time in minutes, divide it by 60 to convert it to hours before entering it into the calculator for $km/h$ results. For example, 30 minutes = 0.5 hours.
What if the speed isn't constant? +
This formula calculates Average Speed over the total distance. It doesn't account for speeding up or slowing down during the journey.
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