Elastic Collision Calculator


Final Velocity of Mass 1: m/s

Final Velocity of Mass 2: m/s


About Elastic Collision Calculator (Formula)

The Elastic Collision Calculator is a tool used to analyze the outcome of two objects colliding and bouncing off each other without losing any kinetic energy. It helps determine the final velocities of the objects after the collision based on their initial velocities and masses.

The formula for calculating the final velocities in an elastic collision is:

For Object 1 (with mass m1) and Object 2 (with mass m2) colliding along the same line:

Final Velocity of Object 1 (v1f) = [(m1 – m2) * v1i + 2 * m2 * v2i] / (m1 + m2)

Final Velocity of Object 2 (v2f) = [(m2 – m1) * v2i + 2 * m1 * v1i] / (m1 + m2)


  • v1i and v2i are the initial velocities of Object 1 and Object 2, respectively.
  • v1f and v2f are the final velocities of Object 1 and Object 2, respectively, after the collision.

It’s essential to note that in an elastic collision, both momentum and kinetic energy are conserved. Therefore, the total momentum of the system before the collision is equal to the total momentum after the collision, and the total kinetic energy before the collision is equal to the total kinetic energy after the collision.

The Elastic Collision Calculator is particularly useful in physics and engineering to understand the behavior of objects during collisions. It is commonly applied in fields such as ballistics, sports, and engineering design to optimize performance and ensure safety in collisions.

When using the calculator, it is important to consider that it assumes a perfectly elastic collision, meaning there are no energy losses due to friction or deformation during the collision. Real-world collisions may involve some energy dissipation, making them inelastic, and the calculation in such cases would require additional considerations.

Overall, the Elastic Collision Calculator provides valuable insights into the outcome of two-object collisions and aids in making informed decisions in various practical applications involving moving objects.

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