1. What is Impulse of a Force?

Definition: Impulse is the product of a force (F) and the time interval (Δt) during which the force acts.

Purpose: It measures the change in momentum of an object when a force is applied over a time interval.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( J \) — Impulse (Newton seconds, N s)
• \( F \) — Force (Newtons, N)
• \( \Delta t \) — Time interval (seconds, s)

Explanation: The force multiplied by the time duration gives the impulse, which equals the change in momentum of an object.

3. Importance of Impulse Calculation

Details: Understanding impulse is crucial in physics, engineering, and safety design as it helps analyze collisions, rocket propulsion, and impact scenarios.

4. Using the Calculator

Tips: Enter the force in Newtons and the time interval in seconds. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are the units of impulse?
A: Impulse is measured in Newton-seconds (N s) or kilogram-meters per second (kg·m/s).

Q2: How is impulse related to momentum?
A: Impulse equals the change in momentum (J = Δp) according to the impulse-momentum theorem.

Q3: Why is time important in impulse?
A: A longer time interval reduces the force needed to achieve the same change in momentum (used in airbags, crumple zones).

Q4: Can impulse be negative?
A: Yes, if the force direction is opposite to the chosen positive direction, the impulse can be negative.

Q5: What's a practical example of impulse?
A: When catching a ball, you extend your hands to increase the time of catch, reducing the force on your hands.