1. What is Net Momentum?

Definition: Net momentum is the vector sum of the momenta of all objects in a system.

Purpose: It helps physicists and engineers analyze collisions, explosions, and other interactions between objects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( p \) — Net momentum (kg·m/s)
• \( m_i \) — Mass of object i (kg)
• \( v_i \) — Velocity of object i (m/s)

Explanation: The momentum of each object is calculated by multiplying its mass by its velocity, then all momenta are summed.

3. Importance of Momentum Calculation

Details: Momentum is conserved in closed systems, making it crucial for analyzing collisions and predicting motion outcomes.

4. Using the Calculator

Tips: Enter masses in kilograms and velocities in meters/second. You can calculate momentum for 1-2 objects (leave second object fields blank for single object).

5. Frequently Asked Questions (FAQ)

Q1: What if objects are moving in opposite directions?
A: Use negative values for velocity in the opposite direction (e.g., -5 m/s for left if +5 m/s is right).

Q2: How is momentum different from kinetic energy?
A: Momentum is a vector quantity (depends on direction) while kinetic energy is scalar. They're related but conserved differently.

Q3: What's the unit of momentum?
A: The SI unit is kilogram-meters per second (kg·m/s).

Q4: Can I calculate momentum for more than 2 objects?
A: This calculator handles up to 2 objects. For more, you'd need to sum all individual momenta.

Q5: Why is momentum conserved?
A: Momentum conservation comes from Newton's third law - every action has an equal and opposite reaction.