Conservation of Momentum Calculator

Find the final velocity after a perfectly inelastic collision.

Mass 1

Velocity 1

Mass 2

Velocity 2

Final velocity (stuck together) 0.8

Formula: v = (m₁v₁ + m₂v₂) ÷ (m₁ + m₂)

Step-by-step with your numbers:

1. Values used:

2. Mass 1 = 2

3. Velocity 1 = 5

4. Mass 2 = 3

5. Velocity 2 = -2

7. Final velocity (stuck together) = 0.8

Did we solve your problem today?

Total momentum is conserved in collisions. This finds the common velocity when objects stick together.

The math behind it

For a perfectly inelastic collision, v = (m₁v₁ + m₂v₂) ÷ (m₁ + m₂). Use signs for direction.

2 kg at 5 m/s meets 3 kg at −2 m/s → final 0.8 m/s.

Is energy conserved too?

No — inelastic collisions lose kinetic energy to heat and deformation.