1. What is Impulse?

Impulse (J) is the change in momentum (Δp) of an object when a force is applied over a time interval. It is a vector quantity with both magnitude and direction.

2. How Does the Calculator Work?

The calculator uses the impulse formula:

Where:

• \( J \) — Impulse (N·s)
• \( \Delta p \) — Change in momentum (kg·m/s)

Explanation: Impulse equals the change in momentum of an object when force is applied. The greater the change in momentum, the greater the impulse.

3. Importance of Impulse Calculation

Details: Calculating impulse is crucial in physics and engineering for understanding collisions, rocket propulsion, sports mechanics, and safety systems like airbags.

4. Using the Calculator

Tips: Enter the change in momentum in kg·m/s. The value must be positive (momentum change > 0).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between impulse and momentum?
A: Momentum is a property of a moving object (p = mv), while impulse is the change in momentum caused by a force (J = Δp = FΔt).

Q2: What are the units of impulse?
A: Impulse is measured in newton-seconds (N·s), which is equivalent to kg·m/s (same as momentum).

Q3: How is impulse related to force?
A: Impulse equals force multiplied by the time over which it acts (J = FΔt). This shows that a smaller force applied longer can produce the same impulse as a larger force applied briefly.

Q4: Can impulse be negative?
A: Yes, impulse can be negative when the change in momentum is in the opposite direction of the chosen positive reference direction.

Q5: Why is impulse important in sports?
A: In sports, increasing impulse (through longer contact time or greater force) can improve performance, like in golf swings or baseball hits.