3 ms·
They enter at orbital velocity or higher, so yes. Mach 20 or 30 would be on the low end. Of course depending on their shape and mass they lose a lot of it on th
by garmaine 8y ago
They enter at orbital velocity or higher, so yes. Mach 20 or 30 would be on the low end. Of course depending on their shape and mass they lose a lot of it on the way down...
- rbanffy 8y agoAnd all the light the aircrews reported was kinetic energy before hitting the atmosphere.