Kepler's First and Third Laws Quick Check

Hi! please keep in my mind that answers vary for each school.
and be careful not to fall people who use false answers

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

A. Mars

2. Which of these describes Kepler’s third law of orbital motion?

A. T2 ∝ a3

3. Which orbital shape did most scientists in the early 1600s think the planets of our solar system have?

A. circular

4. Which is the best description of Earth’s orbit?

A. almost circular

5. Which statement describes Kepler’s third law of orbital motion?

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

Hope this help! an goodluckkk

4 answers

100% thanks

100% thanks love ya 🧍🏾

100% !!!

I can confirm, this is indeed correct