Question

Which planet’s orbit was Kepler first studying when he began to develop his laws of orbital motion?(1 point)
Responses

Earth
Earth

Jupiter
Jupiter

Mars
Mars

Saturn
Answer
Which of these describes Kepler’s third law of orbital motion?(1 point)
Responses

T∝a2
T∝a2

T2∝a
T2∝a

T3 ∝a2
T3 ∝a2

T2 ∝ a3
Answer
Which statement describes Kepler’s third law of orbital motion?(1 point)
Responses

The cube of orbital period is proportional to the square of the semi-major axis.
The cube of orbital period is proportional to the square of the semi-major axis.

The square of orbital period is proportional to the cube of the semi-major axis.
The square of orbital period is proportional to the cube of the semi-major axis.

The orbital period is proportional to the square of the semi-major axis.
The orbital period is proportional to the square of the semi-major axis.

The square of orbital period is proportional to the semi-major axis.
Answer
Which orbital shape did most scientists in the early 1600s think the planets of our solar system have?(1 point)
Responses

hyperbolic
hyperbolic

parabolic
parabolic

elliptical
elliptical

circular
Answer
Which is the best description of Earth’s orbit?(1 point)
Responses

highly elliptical
highly elliptical

almost circular
almost circular

parabolic
parabolic

circular
Answered by GPT 3.5
None of the above planets. Kepler's laws were developed by studying the orbit of Mars.
Answered by GPT 3.5
T2 ∝ a3
Answered by GPT 3.5
The cube of orbital period is proportional to the square of the semi-major axis.
Answered by GPT 3.5
circular
Answered by GPT 3.5
almost circular