One would need to use at least 1,000 ft-lbs of energy to kill a human. This amount of force is equivalent to that of a car crashing into a wall at 30 mph. While it is possible to survive an impact with this much force, it would be highly unlikely and the person would likely suffer from severe injuries.
What is Bullet Energy? ~ It's Not a Measure of Killing Power!
The amount of energy required to kill a human varies depending on the circumstances. A small caliber bullet fired at close range may only require 10 foot pounds of energy to penetrate the skull and cause fatal damage to the brain. However, a high powered rifle fired from long range could require over 1,000 foot pounds of energy to achieve the same result.
In general, it takes between 300 and 600 foot pounds of energy to kill a human with a single shot.

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How Many Foot Pounds is a Bullet?
There is no definitive answer to this question as it depends on a number of factors, such as the type and caliber of bullet, the gun it is fired from, and the distance at which it is fired. However, we can give a general idea of how much force a bullet has behind it.
A typical 9mm pistol bullet has a muzzle energy of around 400-500 foot pounds.
This means that when the bullet leaves the barrel of the gun, it has that much force behind it. Of course, this force quickly diminishes as the bullet travels through the air. By the time it reaches its target, its force will be significantly lower.
Still, even at its reduced power, a bullet can pack quite a punch. It’s important to remember that even a relatively small caliber bullet can cause serious damage if it hits someone in a vulnerable spot. So always handle guns with care and never point them at anything you don’t want to destroy!
How Much Energy is a Foot Pound?
One foot pound is equivalent to 1.3558179483314004 joules. In terms of energy, this is a very small amount. For perspective, a single watt is equal to one joule per second.
So, a foot pound would be the amount of energy needed to produce one watt for approximately 0.7 seconds.
How Many Foot Pounds Does It Take to Kill a Deer?
In order to kill a deer, it generally takes between 15 and 30 foot pounds of energy. The exact amount of energy required will vary depending on the size and weight of the deer as well as where you hit it. A head shot, for example, will require less energy than a shot to the body.
How Much Kinetic Energy Does a Bullet Have?
A bullet travelling at 1,000 feet per second has kinetic energy of 1,000 foot-pounds. This is because kinetic energy is equal to one half of the mass of the object times the velocity squared. So, a 1,000 pound bullet travelling at 1,000 feet per second would have 1/2(1000)(1000000) or 500,000 foot-pounds of kinetic energy.
Conclusion
The blog post discusses how much energy is needed to kill a human. It states that it takes about 1,000 foot-pounds of energy to kill a human, but this number can vary depending on the person’s size and weight. The blog post goes on to say that most people are killed by bullets that have between 200 and 300 foot-pounds of energy.