Kepler showed that planetary orbits are ellipses. What does Kepler's second law state?
A) The vector ~r(t) sweeps out equal areas in equal times.
B) The vector ~r(t) sweeps out unequal areas in equal times.
C) The vector ~r(t) sweeps out equal areas in unequal times.
D) The vector ~r(t) sweeps out unequal areas in unequal times. The rest of this homework will help you show.