Object A has a mass of 1500 kg and is located in Ohio. Object B has a mass of 9000 kg and it is located in the Moltke Crater on the moon. Which object is currently heaviest / has more weight? Acceleration due to gravity on the moon is 1.6 m/s^2 as opposed to earths 9.8 m/s^2.

Estimate the kinetic energy of mars with respect to the sun as the sum of two terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. (assume mars is a uniform sphere with mass = 6.4×10 to the power of 23 kg, radius = 3.4×10 to the power of 6 m, rotation period = 24.7 hours, orbital period = 686 days and is 2.3×10 to the power of 8 km from the sun.)