# Inelastic Collision of Billiard Balls: Kinetic Energy and Impulse Calculations

## Calculating Average Force:

**Initial Momentum:** 0.240 kg * 3.00 m/s = 0.720 kg*m/s

**Final Momentum:** 0.240 kg * 2.40 m/s = 0.576 kg*m/s

**Change in Momentum:** 0.576 kg*m/s - 0.720 kg*m/s = -0.144 kg*m/s

**Duration of Collision:** 0.0150 s

**Average Force:** -0.144 kg*m/s / 0.0150 s = -9.60 N

## Calculating Kinetic Energy Lost:

**Initial Kinetic Energy:** 1/2 * 0.240 kg * (3.00 m/s)Â² = 1.080 J

**Final Kinetic Energy:** 1/2 * 0.240 kg * (2.40 m/s)Â² = 0.720 J

**Kinetic Energy Lost:** 1.080 J - 0.720 J = 0.360 J

## Calculating Remaining Energy Percentage:

**Remaining Energy Percentage:** (0.720 J / 1.080 J) * 100% â 66.67%