I really don't understand how far this "Reality situation" discussion should go but I will entertain you a little bit.
1. That's not my point. My point is that it's possible for an underdeveloped body to throw a considerably heavier projectile at 50 MPH. Take it a step further: The average 14 year-old girl, with practice, can throw an even heavier
softball upwards of 50 MPH as well. Therefore, it should be reasonable for a lighter rock thrown by a grown man to reach speeds sufficient to sting if it hits you. Also, why can't they practice? What do they do in their downtime? There are historical cases of poor troops in the east training to throw rocks, why can't looters?
2. Obviously. Rocks are denser, so they're more dangerous if they hit you. People get hit by baseballs all the time and don't die, but rocks were used as projectiles in war.
3. I'll present this question: Would you stand still while some kid threw a small, jagged rock at you? Would you stand there unflinching? Don't say "Yeah, if I was wearing armor", either, because armor protects you against more than half the impact of the rock ingame. As someone who had rocks thrown at me when I was a kid, I can attest that a single rock can cause large welts and even break skin. Just a regular old rock picked up off the ground, thrown by a 14 year-old runt. They can break glass, for heaven's sake.
4. Behold.
1. I think looters should be cast out from villages, which they cannot feed anymore and leave to die out there. So an underdeveloped well-fed, well-trained body definitely throw better than looters. And it takes a full body motion to make such a throw, on a baseball field, with a baseball. Stones are not well-shape and size like baseball, it has rough surface that will cut your hand if you try to throw it hard. Find a brick and try throwing it and you will see what I mean. Also, I think starving people don't practice sport in their downtime. Actually, I think they have no downtime. There are still much more reasons to it but it is clear that the throw you mean for the looters is not very practical.
2. Denser = more dangerous only applies if there is punctuation or the rock directly hit you, and cause more serious trauma. But you are limiting the situation to a rock denser, but lighter than a baseball. It would make the rock quite small, even more difficult to throw as you cannot hold it tight, and the air drag will be significant.
3. If I have a more dangerous weapon, I may choose to retaliate. Let's be fair. If you charge to someone who throws a rock and hits you, you will get serious injury. I grant you that.
Extrapolation:
- A sling can throw its ammunition at nearly 100 meters per second.
- A sling doubles the projectile's speed as opposed to the average throwing speed.
- This means the throw would be around 50 mps, which is just shy of a longbow arrow's speed.
- But this is based on very hard throws, so let's chop it to 30 mps.
- Assuming it hits the armor and sinks in about a quarter inch (0.006 meters) before bouncing off, we'll take (0.5 x 0.00005 kg x 25 mps ^ 2) / 0.006 meters for an impact force of 4.5 Newtons or 8.25 pounds force.
With all that in mind, is it really so unfair to say that a rock coming in at 8 pounds of force and dinking off your helmet could stun you for a half-second and take 1/15th of your health bar?
You are making it very vague so let me make it more clear how the number comes from.
A sling as long as the thrower's arm, theoretically, can double the projectile's speed, if you can swing your arm as fast as without the sling. Professional cricket bowlers or baseball pitchers can throw at about 50 MPS. So with direct calculation, a sling that long can make the projectile to reach 100 MPS.
Do you have any idea a sling as long as your arm looks like? It is definitely impossible to use. At least not without extensive training. And with that long long heavy sling, I am sure the thrower cannot swing his arm that fast. And the motion for pitching is totally different from using a sling, so you will need some professional sling user, aka looters, to do the throw.
You said the rock will bounce off, but your calculation show a prefect elastic collision. So the rock will embed into your armor/body, and make no sound in the process at all. It must be made from cyber material comes directly from some secret military lab. It is impact you are looking at, so it should be the momentum to be considered. Mass x Velocity, which means at the same speed, or same kinetic energy if you prefer, lighter the rock, smaller the impact. I have left college far too long and cannot dig up so much memory. If you are interested, please look it up yourself.
I really hope the "I see it in some Guinness Record so the looters can do it" discussion ends here because it is the game I want to discuss, not physic.