You can't say that without mentioning https://en.wikipedia.org/wiki/British_Airways_Flight_009

Where the pilot said what is probably the most British thing ever said in history:

> Ladies and gentlemen, this is your captain speaking. We have a small problem.

> All four engines have stopped. We are doing our damnedest to get them going

> again. I trust you are not in too much distress.

Just in case folks don't click on the link, it was a safe landing and everyone survived. It turns out modern planes can glide quite well.

This is a very important point.

The key difference is that a rock (like any ballistic projectile) accelerates until terminal velocity. In contrast, a 747 (like any airplane) descends with a constant vertical velocity when they lose power.