- #36

phans

- 4

- 0

__almost__escaped. In fact, if it's initial velocity had been just a bit higher, it would have escaped! So of course the initial velocity needed to reach height h=r is quite close to Vesc (h=∞).

Repeat your calculations to see what initial velocity is needed to reach h=2r and you'll magically find that it is an even closer approximation to Vesc!