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Impulse Calculator

This calculator helps you determine the impulse applied to an object, the force exerted, or the time interval over which the force acts. Based on the fundamental physics relationship J = FΔt, it is useful for students, engineers, and anyone working with momentum and force problems.

Impulse Calculator

Input Fields
If enabled, the result will update automatically when you change any value.

Impulse Formula

Formula
$$J = F \cdot \Delta t$$

Where:

  • $$J$$ = Impulse (Newton-seconds, N·s)
  • $$F$$ = Average force applied (Newtons, N)
  • $$\Delta t$$ = Time interval over which the force acts (seconds, s)

This formula calculates the impulse delivered to an object when a constant force acts over a given time interval.

Impulse – Worked Example

A force of $$F = 100\ N$$ acts on an object for $$\Delta t = 2\ s$$. What is the impulse?

  • $$F$$ = 100 N
  • $$\Delta t$$ = 2 s
  1. $$J = 100 \times 2$$
  2. $$J = 200\ N{\cdot}s$$

The impulse delivered to the object is 200 N·s.

Impulse is a key concept in mechanics, describing the change in momentum of an object when a force is applied over time. This calculator makes it easy to solve for any of the three variables — impulse, force, or time interval — and supports unit conversions for convenience.

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