**Radial motion**
=================

Many properties regarding the movement of planets in the gravitational field of the star
can be found by studing the energy equation of the radial motion of the planet.

.. py:currentmodule:: symplyphysics.laws.gravity.radial_motion

**Contents:**

.. toctree::
    :maxdepth: 4


    laws.gravity.radial_motion.average_potential_energy_via_average_kinetic_energy
    laws.gravity.radial_motion.potential_energy_of_planetary_motion
    laws.gravity.radial_motion.radial_kinetic_energy_plus_potential_energy_is_constant
    laws.gravity.radial_motion.semimajor_axis_via_kepler_constant_and_total_energy
    laws.gravity.radial_motion.semiminor_axis_of_elliptical_orbit_via_orbit_parameters
    laws.gravity.radial_motion.total_energy_is_negative_average_kinetic_energy