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.
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?