1. What is a Rebound Ratio Calculator?

Definition: This calculator determines the rebound ratio (R) which measures how high an object bounces back compared to its initial drop height.

Purpose: It's commonly used in physics, sports science, and materials testing to evaluate elasticity and energy retention.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( R \) — Rebound ratio (dimensionless)
• \( h_r \) — Rebound height (meters)
• \( h \) — Initial height (meters)

Explanation: The ratio compares how much height an object regains after impact to its original drop height.

3. Importance of Rebound Ratio

Details: The rebound ratio indicates energy efficiency - higher ratios mean less energy was lost during impact. It's crucial for:

• Testing sports equipment (balls, courts)
• Evaluating material elasticity
• Quality control in manufacturing
• Physics education and experiments

4. Using the Calculator

Tips: Measure the initial drop height and rebound height accurately in meters. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What does a rebound ratio of 0.75 mean?
A: It means the object bounced back to 75% of its original drop height.

Q2: Can the rebound ratio be greater than 1?
A: Normally no, unless additional energy was added during impact (like with a superball).

Q3: What affects rebound ratio?
A: Material properties, temperature, surface hardness, and impact velocity.

Q4: How is this used in sports?
A: To test balls (basketballs, tennis balls) and playing surfaces for consistent performance.

Q5: What's a typical ratio for a basketball?
A: About 0.75-0.85 when dropped from 1.8 meters onto a hardwood floor.