Who wants a superhero physics lesson?
Of course you do.
I’m bored, so I did some calculations.
So. Hawkeye. Archer. Badass member of both The Avengers and the JLA (Sorry, Ollie).
His bow has a draw weight of 250 pounds. I got to thinking, how fast would an arrow from this bow go? And how hard would the futzing thing hit?
First, I had to figure out the weight of the actual arrows.
The International Bowhunting Organization’s standard for carbon arrow weight is 5 grains (0.065 grams) per pound of draw weight. Hawkeye’s bow is set to 250 pounds, so an arrow should weigh approx 1250 grains or 81 grams (2.85 ounces for you imperial users).
Now that we know the weight, we can start calculating speed.
If at 1 Newton of force, 1 kilogram can go 1 meter per second, how fast would .081 kilograms go? Using inverse proportionality, at 1 Newton, the arrow would go 12.3 meters per second.
Now 1 pound of draw weight equals about 4.45 Newtons, making Hawkeye’s draw force 1100 Newtons.
Using Newton’s Third Law (for every action, there is an opposite but equal reaction), if Hawkeye draws the full 1100 Newtons of force, how fast is the 81 gram arrow going to fly? At approx 13580.25 meters per second. For you imperial users, that’s 30378.15 miles per hour. For comparison, a commercial jet flies at about 550 mph. That’s about 55 times faster than a 747!
So, now that we know the weight of the arrow and the speed, we can calculate how hard that sucker is going to hit.
Kinetic energy, or knockdown power, is calculated as ½ mass in kilograms times velocity in meters per second squared. So ½(.081kg)•(13580.25m/s)² equals about 7,469,139.2 Joules of energy or about 5,508,954.37 foot-pounds of force. That’s 24 Meganewtons. It takes 35 Meganewtons to launch a Saturn V Rocket! For comparison, a 180 grain bullet fired from a .357 magnum hits with about 640 foot-pounds of force.
Last movie you watched: Thor: the dark world. But like the ending since my mom was watching it when I finished work. Still…. the London part is funny. Especially when my dad joins in and makes his usual comment ‘But that’s not true because ….’ followed by something extremely cheesy… in this case, because you (me) went there after that.
Last song you listened to: “In the Heights” Opening…. I’m on a ‘In the Heights’ mood, what can I say.
Last book you read: My ADD is just awful that I have like 10 books started and none finished…. I’m reading atm, Jane Two by SPF, Sor Juana Ines de la Cruz by Octavio Paz, The physics of superheroes (I don’t remember the author), the Hamiltome, A little story of nearly everything (paraphrasing the name), and those are the ones that just come into my mind atm.
The last thing you ate: A refried beans and chorizo sandwich… I am Mexican
If you could be anywhere right now, where would you be: London. I love my life in London, I love who I am in London. There’s no other answer to this question, I would be at my second home.
Where would you time travel to: Probably at the peak of the Teotihuacan empire… a lot of questions to be answered, what happened to them? who the fuck did they built that? What did they use to paint the Quetzalcoatl pyramid? Were they really as tall as they say they were? Why did we then ended up getting fucked over with the average height of the Mexican? All important things.
Fictional character you would hang out with for a day: I truly don’t know….young Sirius Black would have been a riot though… like after Hogwarts before you know what Marauders…
Or Poe Dameron…. yeah, Poe Dameron.
Since there is no question 8, I’m making one up: If you could only read one book for the rest of your life, what would it be: Les Miserables… enough said.