Quote Originally Posted by noparlpf View Post
So without air resistance (so you have to have a suit or something?) how many gees does the faller experience at most?
One, at the surface. As you fall deeper into the Earth there's less mass underneath you so the gravity actually drops. Don't forget that 1g is actually a pretty hard acceleration--most cars couldn't achieve it; if you were to travel continuously at 1g for 21 minutes, you'd be going at nearly 28,000mph! The actual peak speed at the Earth's core would be less than that because of the reduced acceleration as you go deeper--I think the article I linked to above said you'd hit around 18,000mph.