Change to English please.
火箭的原理
火箭內裝配高效能燃料及氧化劑。
高效能燃料燃燒時，火箭底部噴出氣體，能產生強大的力量。
這種力量足以抵消地心吸力，把太空船送到太空去。
穿梭機發射的影片
火箭的速度最少要每秒8公里，才能脫離地心吸力
盛載燃料的部分用完後會脫落
Change to English
2010-03-05 12:45 am
回答 (1)
2010-03-05 2:59 am
✔ 最佳答案
Principle behind a rocketWhen burning the fuels, hot gases is ejected downward from the bottom of the rocket and gives out a great force which is able to break away from force of gravity.
Video of launching a space shuttle.
The speed of the rocket must be at least 8km/s to break away from force of gravity.
The parts which contains fuels will be dropped off when their fuels are used up.
收錄日期: 2021-04-16 14:05:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100304000051KK00738