4 ms·
No, it's explicitly defined as a speed or velocity, not as acceleration and not as energy.
by nilkn 9y ago
No, it's explicitly defined as a speed or velocity, not as acceleration and not as energy.
- larkeith 9y agoA velocity is the total of acceleration over time (as was referred to). A mass (the spacecraft) moving at a velocity has a given amount of energy, and in this context may be used interchangeably.
- mannykannot 9y agoThis is just pointlessly pedantic. You are going to get into all sorts of problems if you arbitrarily substitute any of velocity, acceleration or energy for any of the others. Having unstated dependencies is only going to lead to avoidable confusion. The key insight revealed in the term 'escape velocity' is that it is independent of the mass of the body. It is also independent of how quickly it acquires that velocity.