A planet is observed to have a moon that orbits with a period of 2.76 x 10^4 s. If Kepler's constant for this planet is 9.20 x 10^-13 s^2/m^3, what is the speed of the moon along its orbit? 1.07 x 10^3 m/s 1.15 x 10^3 m/s 3.29 x 10^3 m/s 2.14 x 10^3 m/s