5 ms·
1) No 2) * Escape velocity is the velocity required to counter the force of gravity, ie 'away' or 'out' from the center of the planet, opposite the force of gr
by ArchReaper 7y ago
1) No
2) * Escape velocity is the velocity required to counter the force of gravity, ie 'away' or 'out' from the center of the planet, opposite the force of gravity.
* Edit: Looks like I'm wrong, guess I slept that day in physics
- teraflop 7y agoEscape velocity is actually the same in any direction, not just directly upward. This is true because in a two-body system, whether or not a trajectory escapes to infinity depends only on whether the sign of specific orbital energy[1] is positive or negative. Specific orbital energy is a function of kinetic energy and potential energy, but is independent of the direction of motion. [1]: https://en.wikipedia.org/wiki/Specific_orbital_energy https://en.wikipedia.org/wiki/Specific_orbital_energy