Question

which of these describes keplers third law of orbital motion? (1 point)

○ t³ ∝ a²

○ t ∝ a²

○ t² ∝ a³

○ t² ∝ a

Explanation:

Kepler's third law of orbital motion states that the square of the orbital period \( T \) of a planet is proportional to the cube of the semi - major axis \( a \) of its orbit. This is mathematically represented as \( T^{2}\propto a^{3} \).

Answer:

\( T^{2}\propto a^{3} \) (the option \( T^{2}\propto a^{3} \) is the correct description of Kepler's third law of orbital motion)