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

Responses

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

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.

1 answer

The correct statement that describes Kepler’s third law of orbital motion is:

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

This means that if you take the orbital period (T) of a planet and the semi-major axis (a) of its orbit, the relationship can be expressed as \( T^2 \propto a^3 \).