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## Main Question or Discussion Point

I was wondering how to do the math for a bullet hitting some body armor.

Would you just divide the original force of impact by the area of a the circle surrounding the point at lets say 3 inches?

So.. lets say I gave a bullet moving 1500 m/s at 1g. so it would be .5(1)(1500^2)=1125kJ joules. (I know that these aren't the right speed and mass) So, at 3" you would divide

1125/9pi?

This is a high school level project, so I'm hoping the math isn't very complicated.

Another problem is the use of different materials for the body armor, whether ceramics, steel or something else..

Would you just divide the original force of impact by the area of a the circle surrounding the point at lets say 3 inches?

So.. lets say I gave a bullet moving 1500 m/s at 1g. so it would be .5(1)(1500^2)=1125kJ joules. (I know that these aren't the right speed and mass) So, at 3" you would divide

1125/9pi?

This is a high school level project, so I'm hoping the math isn't very complicated.

Another problem is the use of different materials for the body armor, whether ceramics, steel or something else..

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