# Ballistic Coefficient - using body length

## Description

In ballistics, the ballistic coefficient (BC) of a body is a measure of its ability to overcome air resistance in flight. It is inversely proportional to the negative acceleration — a high number indicates a low negative acceleration. This is roughly the same as saying that the projectile in question possesses low drag, although some meaning is lost in the generalization. BC is a function of mass, diameter, and drag coefficient.

Related formulas## Variables

BC_{Physics} | ballistic coefficient as used in physics and engineering (kg/m^{2}) |

ρ | average density (kg/m^{3}) |

l | body length (m) |

C_{d} | drag coefficient (dimensionless) |