Impulse Converter
How to Use the Impulse Converter
Enter an impulse value, choose the source unit and select the target unit. Impulse represents force applied over time and is equivalent to a change in momentum.
Practical Example
An impulse of 20 N·s is also 20 kg·m/s. Using 1 lbf·s ≈ 4.44822 N·s, 20 N·s is about 4.496 lbf·s.
Factors That Affect Interpretation
The converted value is fixed, but physical impulse depends on both force magnitude and how long the force acts. Sign conventions may also indicate direction.
Frequently Asked Questions
What is the SI unit of impulse?
The SI unit is newton-second (N·s).
Is impulse equal to momentum change?
Yes, impulse equals the change in momentum.
Can impulse be negative?
Yes. A negative sign can indicate direction relative to the chosen axis.
Understanding Impulse Units
Impulse represents force applied over time and is equivalent to the change in momentum. Common units such as N·s, kg·m/s and lbf·s can describe the same physical quantity using different measurement systems.
Conversion changes only the unit scale. In real impacts, the same impulse can result from a large force over a short time or a smaller force over a longer time, so force-time history may also matter.
Technical Context and Conversion Notes
Impulse is force integrated over time and equals change in momentum. N·s and kg·m/s are equivalent SI expressions, while real force can vary throughout the impact interval.