A tool used to determine the kinetic energy of a projectile, typically a BB or pellet, based on its velocity (feet per second) and mass. For instance, knowing the weight of a projectile and its speed allows the determination of its energy in joules, a standard unit of energy. This calculation is frequently used in airsoft and airgun sports.
Understanding projectile energy is crucial for safety and regulatory compliance. Different jurisdictions and sporting organizations impose limits on muzzle energy for airguns. This calculation provides a quantifiable measure to ensure responsible use and adherence to these limits. Historically, determining projectile energy has been important in ballistics and hunting, and this principle extends to modern recreational shooting activities. Calculating energy allows for comparisons between different projectiles and weapons, facilitating informed decisions regarding equipment and safe practices.