Mitigating data leakage from insider threats is a difficult challenge. Businesses must take advantage of every opportunity to better understand how employee behavior and intent relates to security issues, and to make security a priority in every aspect of business operations.
The velocity of a projectile with respect to the muzzle at the instant the projectile leaves the weapon.
Let's say that the rock(s) and the blade have a perfectly elastic collision. With the large rock, after the collision its velocity will be 10kg/(5.5kg)100 m/s ~ 181 m/s. The small rock, after the collision, will have velocity 10kg/(5.003)100 m/s ~ 200 m/s. (This is a pretty small muzzle velocity for a bullet). Since its mass is much smaller, however, this means it has far less kinetic energy than the large rock, and a much smaller momentum.