What is the Average Force of Bullets Bouncing off Superman's Chest?

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In summary, the conversation discusses the concept of bullets bouncing off Superman's chest and the calculation of the average force exerted by a stream of bullets on his chest. The use of Newton's laws and the calculation of the change in momentum is also mentioned.
  • #1
Swagger
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I can't figure this one out. Please help.

It is well known that bullets fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with bullets of mass m = 1.8 g at a rate of R = 200 bullets/min. The speed of each bullet is v = 460 m/s. Suppose the bullets rebound with no change in speed. What is the average force exerted by the stream of bullets on Superman's chest?


THANK YOU!
 
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  • #2
Use Newton's 2nd and 3rd laws. Force equals the rate of change of momentum.
 
  • #3
Well I have tried using Impulse (change in p = F * time) and I am not getting it right. The change in momentum is 1.656, right? And then you should be able to just plug in...using 60 sec for time, right?
 
  • #4
Correct, 1.7 kgm/s is the change in momentum of one bullet. Now just calculate how many bullets hit per second for the total change in momentum per second.
 
  • #5
I got it! Thanks!
 

Related to What is the Average Force of Bullets Bouncing off Superman's Chest?

What is the explanation behind bullets bouncing off Superman?

The explanation behind bullets bouncing off Superman is his superhuman abilities. His body is extremely dense and durable, making it almost impossible for bullets to penetrate his skin. Additionally, he has enhanced reflexes and can move at superhuman speeds, allowing him to dodge or deflect bullets.

Why can't Superman be hurt by bullets?

Superman's invulnerability is a result of his Kryptonian physiology. On his home planet, Krypton, the gravity was much stronger than on Earth, causing his body to become incredibly dense and strong. This gives him an extra layer of protection against physical attacks, such as bullets.

What happens when a bullet hits Superman?

When a bullet hits Superman, it either bounces off his body or is crushed upon impact. This is due to his incredible strength and durability, making him virtually indestructible. Superman may feel the impact of the bullet, but it does not cause any harm or injury.

Can anything penetrate Superman's skin?

While most objects, including bullets, cannot penetrate Superman's skin, there are some rare exceptions. Certain forms of Kryptonite, a radioactive mineral from his home planet, can weaken or even kill Superman. Additionally, magic and beings with similar superhuman abilities may also be able to harm him.

How does Superman's ability to deflect bullets work?

Superman's ability to deflect bullets is a combination of his speed, strength, and enhanced senses. He is able to see and react to objects moving at high speeds, allowing him to dodge or catch bullets before they hit him. He can also use his strength to redirect the bullets' trajectory, sending them in a different direction.

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