Lesson
Lesson-18.1.5- describe the differences in the orbits of comets, moons and planets.
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Lesson-18.1.4- explain that gravitational force: ??? causes moons to orbit planets ??? causes the planets to orbit the Sun ??? causes artificial satellites to orbit the Earth ??? causes comets to orbit the Sun.PreviousLesson-18.1.6- use the relationship between orbital speed, orbital radius and time period: orbital speed = 2 ???? ??orbitalradius/time period v=2?? ???? r/TNext