1. What is Car Crash G Force?

Definition: G-force measures the acceleration experienced during a car crash relative to Earth's gravity.

Purpose: It helps assess crash severity and potential injury risk in automotive safety analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( G \) — G-force experienced (dimensionless)
• \( \Delta v \) — Change in velocity (m/s)
• \( g \) — Gravitational acceleration (9.81 m/s²)
• \( \Delta t \) — Time interval of deceleration (seconds)

Explanation: The formula calculates how many times Earth's gravity the acceleration/deceleration represents.

3. Importance of G Force Calculation

Details: Understanding G-forces helps in vehicle safety design, crash test analysis, and assessing potential human injury thresholds.

4. Using the Calculator

Tips: Enter the velocity change (Δv) in m/s and the time interval (Δt) in seconds. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a survivable G-force in car crashes?
A: Humans can typically survive 20-30G for very brief periods, but injury risk increases significantly above 10G.

Q2: How does Δv relate to crash severity?
A: Higher Δv means more severe crashes as kinetic energy increases with velocity squared.

Q3: Why is time interval important?
A: Longer deceleration times reduce G-forces, which is why crumple zones improve safety.

Q4: How do airbags affect G-forces?
A: Airbags increase Δt, thereby reducing peak G-forces on occupants.

Q5: What's a typical Δt for car crashes?
A: Modern vehicles with crumple zones typically have Δt of 0.1-0.2 seconds for frontal impacts.