Calculating your impulse is straightforward once you know the Impulse 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 Impulse Calculator.
What is Impulse?
The Impulse calculation tells you your impulse from a few simple inputs. The figure you are solving for here is the impulse.
The Impulse formula
The core formula is:
Impulse = Force × TimeHere is what each input means:
- Force — a value measured in N. Example: 100 N.
- Time — a value measured in s. Example: 0.5 s.
How to calculate it step by step
- Write down the force (for example, 100 N).
- Write down the time (for example, 0.5 s).
- Apply the formula above to get your impulse.
- Double-check the result with the Impulse Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Force | 100 N |
| Time | 0.5 s |
| Impulse | 50.0000 |
With force of 100 N and time of 0.5 s, the impulse works out to 50.0000.
Example 2
With force of 200 N and time of 0.5 s, the impulse works out to 100.0000.
| Result | Value |
|---|---|
| Impulse | 100.0000 |
Example 3
With force of 50 N and time of 0.5 s, the impulse works out to 25.0000.
| Result | Value |
|---|---|
| Impulse | 25.0000 |
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 Impulse Calculator does it instantly, for free, with the formula and a worked example built in.
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