Yes, you are correct here, my mistake for posting quickly. I said force when I should have said acceleration, which is identical regardless of whether the rock is large or small. The thrower would have to impart that exact same vertical component if the two rocks are travelling horizontally at the same speed, a larger rock isn't going to fall faster than a small one.
However even though a small rock can go faster and so not need as much upwards trajectory, to get a rock 5m in 1 sec and at the same level as it was thrown, you only need to throw it at 7m/s and 45°. That is nowhere near impossible, and the throw in question was not 5m, it's about 2 perhaps 3 at the most so a throw of just 4m/s would get it there with no issues.
The larger rock is going to fall downward faster in less time than the small one. It's greater weight is a force dragging it down much more forcefully than the lesser weight of a smaller, lighter rock. That was the basis for my skepticism that he could throw this 10 lb rock in a perfect horizontal line across a distance of 8-10 feet from the parking lot area to the window. We are not talking about a baseball here. I think for him to get it that distance he's almost going to have to kind of hurl it out there which will make his accuracy in hitting the window at all a dicey proposition. In baseball, pitchers will often make what is known as wild pitch when they are trying to throw the ball hard. It makes sense that if you are trying to hurl a 10 lb rock over a distance of 8-10 feet maybe your accuracy is going to be off and you effectively throw a wild pitch. You are going to sacrifice some control when you go for speed, and again you are going to have to propel this large rock out of your hand at a fast speed to ensure it has enough juice by the time it hits the window to shatter the glass. My vision for this pitch is that is going to be well below the strike zone of the window even if this guy throws it as hard as he can b/c gravity is going to have dropped the rock at least 2.5 feet vertically as it moves across a span of 8-10 feet by my calculations. I don't know how tall this window is but maybe we can examine that to see what the height is of his "strike zone" and how much he can afford the ball to drop in the vertical and still hit the window.
Does anybody know if Rudy was a good baseball player, and if so was he a pitcher? It's my understanding he was more into basketball?
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