Kepler's laws are never a starting point for an AP Physics 1 question.
That said... situations involving gravitation and planetary orbits are part of Physics 1. AP Physics 1 does include circular orbits, from which one could in principle do the work that derives Kepler's T^2-r^3 law. AP Physics 1 does include angular momentum conservation, from which one can understand the same consequences as Kepler's equal areas/equal times law. There's no need to understand elliptical orbits, just circular orbits.
Physics C includes some questions where the best approach is to cite one of Kepler's laws and logic from there. Physics 1 does not - the approach to every planet problem starts with Newton's law of gravitation or conservation of angular momentum.
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