Collision
Solve 1D two-body collisions: elastic final speeds, perfectly inelastic stick-together speed, or partial restitution with e. Momentum checks and kinetic-energy loss included. Free online calculator with formulas and step-by-step solutions.
Key formula
elastic v1,v2; inelastic v=(m1u1+m2u2)/(m1+m2); 0<=e<=1
About this tool
A 1D collision calculator finds final speeds after two masses interact along a line. Elastic mode conserves kinetic energy; perfectly inelastic mode sticks the masses together; partial restitution uses a coefficient e between 0 and 1.
How to use this calculator
- Choose the variable you want to solve for and confirm which values are already known.
- Enter inputs in consistent units before calculating so the formula is applied correctly.
- Check whether the result is physically reasonable by comparing it with the size of the inputs.
- Use the step-by-step breakdown to see how the equation was rearranged and evaluated.