Calculating your velocity at time t is straightforward once you know the Free Fall Velocity formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Free Fall Velocity Calculator.
What is Free Fall Velocity?
The Free Fall Velocity calculation tells you your velocity at time t from a few simple inputs. The figure you are solving for here is the velocity at time t.
The Free Fall Velocity formula
The core formula is:
Velocity at time t = Gravity × Fall timeHere is what each input means:
- Fall time — a value measured in s. Example: 3 s.
- Gravity — a value measured in m/s². Example: 9.81 m/s².
How to calculate it step by step
- Write down the fall time (for example, 3 s).
- Write down the gravity (for example, 9.81 m/s²).
- Apply the formula above to get your velocity at time t.
- Double-check the result with the Free Fall Velocity Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Fall time | 3 s |
| Gravity | 9.81 m/s² |
| Velocity at time t | 29.4300 |
With fall time of 3 s and gravity of 9.81 m/s², the velocity at time t works out to 29.4300.
Example 2
With fall time of 6 s and gravity of 9.81 m/s², the velocity at time t works out to 58.8600.
| Result | Value |
|---|---|
| Velocity at time t | 58.8600 |
Example 3
With fall time of 1.5 s and gravity of 9.81 m/s², the velocity at time t works out to 14.7150.
| Result | Value |
|---|---|
| Velocity at time t | 14.7150 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
Prefer not to do the maths by hand? — the Free Fall Velocity Calculator does it instantly, for free, with the formula and a worked example built in.
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