or the one on the right HINT Review Working It 1 pt True or False You

# Or the one on the right hint review working it 1 pt

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or ___the one on the right (HINT: Review Working It Out 3.2.) 16. (1 pt) ___ True or ___ False : You and Earth are exerting equal and opposite forces on each other. 17. (1 pt) The astronauts who walked on the Moon during the Apollo missions 11 – 17 (except 13) weighed only about 1/6 as much as they did on Earth. Using Newton’s law of gravity, explain why. 4
18. (2 pts) ___ True or ___ False : You wear a seat belt in a car because you are going extremely fast at a constant speed, not because you may have to stop suddenly. Explain your choice. 19. (2 pts) Let's say that a comet on a highly eccentric orbit passes very close to the Sun in 2020. Its interaction with the giant planet Jupiter is predicted to alter its orbit such that it reaches the Sun's escape velocity . Will the orbit of the comet remain bound, become unbound, or simply change shape? Explain. 20. (6) A friend’s young child, 6 years old, finds out you are studying astronomy and comes up to you and says, “Hey! How come there’s no gravity in space? Space would be so cool to float around in!” How would you answer to convince the young person that there is gravity in space and thus erase that myth from the little one’s brain? Use good writing form. It is up to you as to how you answer: dialog, lecture, story, poem, or other. 5

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