If there is a small rocket on top of a big one, and if the big one is jettisoned and the small one is ignited, then their speeds are added.
add big ignite
Hermann Oberth
These are some quotes by German author Hermann Oberth Scientist, who lived between June 25, 1894 and December 28, 1989.
Quotes by Hermann Oberth
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Intuition is the wisdom formed by feeling and instinct - a gift of knowing without reasoning... Belief is ignited by hope and supported by facts and evidence - it builds alignment and creates confidence. Belief is what sets energy in motion and creates the success that breeds more success.