How are we able to calculate how far we’re able to throw things extremely precisely?

Question

For example, if you’re standing 20 feet away from me, and you tell me to throw you a ball, how is my arm able to generate almost the exact amount of power required to throw the ball 20 feet? How and where does this “calculation” happen?

In: Physics

Answer 1

This is only tangentially related, but I learned that when you run to *catch* a ball, the only calculation your brain needs to make is to keep the ball at the same angle from your eyes the whole time. If the ball drops below that angle, you move toward it faster. If it rises above, you’re closing in too quickly and you need to slow down.