A ballistics question I have (regarding penetration)

AI Thread Summary
The discussion centers on the penetration behavior of two projectiles with identical velocities but differing masses and frontal areas when impacting concrete. Projectile 2, being heavier and having twice the mass of Projectile 1, possesses greater momentum and kinetic energy, leading to a higher potential for concrete destruction. The key question raised is whether both projectiles would exit the medium at the same velocity or if the heavier projectile would retain a higher velocity after penetration. Additionally, the impact of the pointed nose shape on penetration dynamics is questioned. Understanding these factors is crucial in the niche field of terminal ballistics.
Bookworm216
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I've been wondering about this for quite some time, and I was hoping I'd get some answers here. Well, here goes:

2 projectiles (bullets) enter the same homogeneous medium (let's say concrete) at a 0 degree angle. Both projectiles have identical impact velocities, however, "Projectile 2" has a mass twice that of "Projectile 1", while maintaining identical sectional densities. Therefore the second projectile would have a frontal surface area twice that of the first projectile. Projectile 2 has twice the momentum and kinetic energy compared to projectile 1, but by the time it would have penetrated the medium, it would have destroyed twice the amount of concrete as projectile 1. Both projectiles are have a pointed nose.

My question is, would both projectiles leave at same velocity upon penetrating, or would the heavier projectile leave at a higher velocity? Also, would the nose shape matter?

Any insight you may have would be greatly appreciated, and I apologize if I'm asking a lot.
 
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I guess terminal ballistics is a really niche science after all...
 
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