premise: as the force of gravity decreases , the weight of the object will decrease sent2: mars is a kind of planet sent3: the mars rover is a kind of vehicle sent4: earth is a kind of planet sent5: gravitational force is similar to force of gravity sent6: a vehicle is a kind of object sent7: earth is greater in mass than mars sent8: the gravitational force of a planet does not change the mass of an object on that planet or celestial body sent9: as mass of a planet increases , the force of gravity on that planet will increase.
hypothesis: the mars rover will weigh less and have the same mass on mars than on earth