1. What is the Impulse Formula?

Definition: The impulse formula states that impulse (J) equals the change in momentum (Δp) of an object.

Purpose: It helps physicists and engineers analyze the effect of forces acting over time on an object's motion.

2. How Does the Impulse Formula Work?

The formula is expressed as:

Where:

• \( J \) — Impulse (Newton-seconds, N s)
• \( \Delta p \) — Change in momentum (kilogram-meters per second, kg m/s)

Explanation: Impulse equals the change in an object's momentum, showing how force applied over time affects motion.

3. Importance of Impulse Calculation

Details: Understanding impulse is crucial for analyzing collisions, rocket propulsion, sports physics, and safety engineering.

4. Using the Calculator

Tips: Simply enter the change in momentum (Δp) in kg m/s to calculate the impulse in N s.

5. Frequently Asked Questions (FAQ)

Q1: What units are used for impulse?
A: Impulse is measured in Newton-seconds (N s), which is equivalent to kg m/s.

Q2: How is impulse related to force?
A: Impulse equals force multiplied by time (J = F × Δt), showing how longer application of force increases impulse.

Q3: What's the difference between impulse and momentum?
A: Momentum is mass times velocity (p = mv), while impulse is the change in momentum caused by a force over time.

Q4: Why is impulse important in collisions?
A: It helps determine the forces involved and design safety features to reduce impact forces by increasing collision time.

Q5: Can impulse be negative?
A: Yes, when the change in momentum is negative (object slowing down or changing direction).