Collision analysis
Vehicle Collision Momentum Calculator
Resolve pre-impact velocity from vehicle masses, headings, and established post-impact motion in one or two dimensions.
Conservation relationship
Σ momentum before impact = Σ momentum after impact
Σ(m × velocity)before = Σ(m × velocity)after
Σ(m × velocity)before = Σ(m × velocity)after
Momentum is a vector. In an angled collision, resolve each velocity into consistent x and y components before solving.
Required support
- Defensible vehicle masses, including relevant occupants or load.
- Post-impact departure headings and speeds.
- A consistent coordinate system and angle convention.
- Consideration of external impulse during the collision interval.
Momentum cannot supply a unique answer when the available evidence leaves more unknowns than independent equations.
Related tools
Collinear momentum · Post-impact speed from final rest · Crush energy