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

Question

Responses

T∝a2
T∝a2

T2 ∝ a3
T2 ∝ a3

T2∝a
T2∝a

T3 ∝a2

Answer 1

Kepler’s third law of orbital motion states that the square of the orbital period (T) of a planet is directly proportional to the cube of the semi-major axis (a) of its orbit. This is mathematically expressed as:

\[ T^2 \propto a^3 \]

So the correct response is:

T² ∝ a³