Home Library Explore SAT

Home Library Explore SAT

Motion in Space Flashcards | StudBud

Explore/Motion in Space

Motion in Space

4 terms·StudBud Administration·25 plays

• Kepler developed three laws of planetary motion. • Both the period and speed of an object that is in a circular orbit around another object depend on two quantities: the mass of the central object and the distance between the centers of the objects #Gravitational Force #Physics

Flashcards4 cardsFPractice quizPHost liveL

Questions 4

Answers

1
How would the period of an object in a circular orbit change if the radius doubled?
The period would decrease by a factor of 4.
The period would increase by a factor of 2.
The period would decrease by a factor of 2√2 .
The period would increase by a factor of 2√2 .
2
Newton’s law of universal gravitation
can be derived from Kepler’s laws of planetary motion.
does not apply to Kepler’s laws of planetary motion.
can be used to disprove Kepler’s laws of planetary motion.
can be used to derive Kepler’s third law of planetary motion
3
Which of the following correctly expresses Kepler’s second law?
A planet's period is proportional to its distance to the Sun
A planet sweeps out equal areas of orbit in equal time.
Planets travel in elliptical orbits with the sun at a focus.
A planet's period is independent of the planet's mass.
4
According to Copernicus, how do planets move?
planets move on small circles called epicycles.
Planets move in circular orbits around Earth,
Planets move in circular orbits around the Sun.
Planets move in elliptical orbits with the sun at on focus.