1. What is Impulse of Force?

Definition: Impulse of force is the product of force and the time for which it acts. It equals the change in momentum of an object.

Purpose: This calculator helps determine the impulse using the dimensional formula [M L T⁻¹].

2. How Does the Calculator Work?

The calculator uses the dimensional formula:

Where:

• \( M \) — Mass (kilograms, kg)
• \( L \) — Length (meters, m)
• \( T \) — Time (seconds, s)

Explanation: The impulse is calculated by multiplying mass (M) by length (L) and dividing by time (T).

3. Importance of Impulse Calculation

Details: Impulse is crucial in physics for understanding collisions, rocket propulsion, and any situation where forces act over time intervals.

4. Using the Calculator

Tips: Enter the mass in kg, length in meters, and time in seconds. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are the SI units for impulse?
A: The SI unit for impulse is newton-second (N·s) or kilogram-meter per second (kg·m/s).

Q2: How is impulse related to momentum?
A: Impulse equals the change in momentum of an object (J = Δp).

Q3: What's a practical example of impulse?
A: Airbags in cars increase the time of impact during a collision, reducing the force (impulse remains constant).

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

Q5: How does this relate to the impulse-momentum theorem?
A: The theorem states that the impulse on an object equals its change in momentum (FΔt = mΔv).