When to use this calculator
Impulse equals the change in momentum. A force applied for longer can produce a larger momentum change.
Explore the force, energy & machines calculators for other questions in this topic. For a related calculation, use the Impulse From Momentum Calculator: Find impulse from a change in linear momentum.
PUTTING IT INTO PRACTICE
Impulse: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Average net force (N) | 20 |
| Time interval (s) | 0.5 |
| Result | 10 N·s |
- Check the input labels and enter the example values above.
- Apply the relationship: Impulse = average force × time.
- The result is 10 N·s, rounded for display.
How to interpret your result
For changing forces, enter the time-average force over the interval.
Distinguish net force from individual forces and specify the direction of displacement. Work can be negative. Force multiplication does not create extra energy because motion distance and losses also matter.
Frequently asked questions
Is mechanical advantage the same as efficiency?
No. Mechanical advantage compares forces; efficiency compares useful output energy or power with the corresponding input.
When is the impulse calculator useful?
Impulse equals the change in momentum. A force applied for longer can produce a larger momentum change.
How do I use the impulse calculator?
Enter average net force (n), time interval (s). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Impulse = average force × time.
What should I check before using the result?
For changing forces, enter the time-average force over the interval.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
Further reading
For background on this topic, see OpenStax: work and energy ↗. This is a topic reference, not an external review or endorsement of this tool.
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