Rubber band, elastic, spring
Because it generates enough momentum to keep the train going with out really having to speed up
Answer:
<u>Here are some of the songs of Beethoven's</u>:–
- Septet.
- Moonlight Sonata.
- Pathetique Sonata.
- Adelaide (Most popular).
- Eroica Symphony.
- Fifth Symphony.
- Fidelio.
- Emperor piano concerto.
When sitting down there is gravity , when sat down the chair is pushing back at a equal but opposite force
