- #1
Born2Perform
- 80
- 0
it is a basic question:
a spacetaxi must bring some people from planet A to planet B. wasting energy, it accelerates until the middle of the distance, then again using energy it decelerates to reach planet B. then it returns to planet A, in the same way.
it consumed fuel 4 times, but in space nothing is changed, and the momentum of the taxi returned 0.
how the energy is conserved here? thank you.
a spacetaxi must bring some people from planet A to planet B. wasting energy, it accelerates until the middle of the distance, then again using energy it decelerates to reach planet B. then it returns to planet A, in the same way.
it consumed fuel 4 times, but in space nothing is changed, and the momentum of the taxi returned 0.
how the energy is conserved here? thank you.