科目: Form 3 Phy Chem 課題: physics Q&A POST DATE: 05/02/2012 03:37:40 PM |
| Question from: johnsonchan A spacevraft carried by a rocket was launched to the space.If the total mass of the spacecraft and the rocket was 600000kg and the average acceleration was 12ms^-2,what was the average lift-ooff thrus (more...) |