This depends on the particular caliber, weight, velocity, and construction of the bullet and the "Threat Level" of the body armor. No vest is bullet proof -- the preferred term is body armor.
Generally speaking hollow points are much lesslikely to penetrate body armor which will stop non-hollowpoints bullets of the same caliber, weight, and velocity.
It depends - logically - on the caliber of the bullet, and the thickness of the pine. A deer rifle bullet will penetrate a 2x4 with no difficulty, and may or may not penetrate a 4x4. A .22 will penetrate neither, a .50 machine gun bullet will penetrate an 8x8. Loosely speaking, I would not consider pine to be a bulletproof material.
There are many materials with bullet proof properties including Kevlar, Lexan, Titanium, Steel and Carbon Composites. Keep in mind that "bullet-proof" is a relative term. Armor-piercing bullets are designed to be able to penetrate most of these so-called "bullet-proof" materials that will do a decent job of stopping normal (non-armor-piercing) rounds.
No. People are not bullet proof.
Ambulances are not bullet proof.
No Tungsten is NOT bullet proof.
No airplanes do not have bullet proof glass.
yes if you add bullet proof material
A typical football helmet is not bullet proof but someone could create a bullet proof football helmet.
The standard bullet proof vest is not stab proof, however there are some bullet proof vests that are. These stab-proof vests have a wire mesh on the outside, or a similar material.
Bullet Proof..I Wish I Was was created in 1995.
For one, the US President uses bullet proof glass.
The best-known bullet-proof material is probably Kevlar.