CHE 113 Lecture Notes - Lecture 22: Firing Pin, Terminal Ballistics, Solid Steel

• School: Syracuse University
• Department: Chemistry
• Course: CHE 113
• Professor: Gaynor E Spencer

Document Summary

Che 113- lecture 22- firearms, tool marks, and impression evidence. Science of the travel of a projectile in flight. Flight path of a bullet includes: travel down the barrel, path through the air, and path through a target. Controlled expansion of burning gunpowder generates force. Area is the base of the bullet and is a constant. Energy transmitted to the bullet will depend upon the [bullet mass] times [force] times [the time interval over which the force is applied] (barrel length) Bullet travel through a gun barrel is characterizing by increasing acceleration as the expanding gases push on it. Go right through target without dispersing any of its energy. Does not deliver energy to the target, it will go right through. Short high velocity bullet begins tumbling more rapidly in tissue. Longer bullets have higher ke but may penetrate so well that it exits the target without much energy loss.