1. What is Free Fall Time?

Free fall time is the duration it takes for an object to fall from a certain height to the ground under the influence of gravity alone, assuming no air resistance or other forces.

2. How Does the Calculator Work?

The calculator uses the free fall equation:

Where:

• \( t \) — Fall time (seconds)
• \( h \) — Height (meters)
• \( g \) — Acceleration due to gravity (m/s²)

Explanation: The equation calculates the time it takes for an object to reach the ground when dropped from rest from height h, under constant acceleration g.

3. Importance of Fall Time Calculation

Details: Calculating fall time is essential in physics, engineering, and safety calculations. It helps determine impact velocity and is used in designing safety systems.

4. Using the Calculator

Tips: Enter height in meters and gravity in m/s² (Earth's gravity is approximately 9.8 m/s²). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Does this account for air resistance?
A: No, this is for ideal free fall without air resistance. Real-world falls will take slightly longer due to air resistance.

Q2: What is Earth's standard gravity?
A: Approximately 9.80665 m/s², though 9.8 m/s² is commonly used for calculations.

Q3: Can I calculate fall time on other planets?
A: Yes, just input the appropriate gravity value for that planet (e.g., Mars: 3.71 m/s²).

Q4: How does height affect fall time?
A: Fall time increases with the square root of height - doubling the height increases fall time by √2 (about 1.414 times).

Q5: What's the maximum height this works for?
A: Theoretically any height, but for very large heights (e.g., space), you'd need to account for changing gravity and other factors.