If the same net force is applied to a 7 kg object and a 21 kg object, then. . the 21 kg object accelerates three times faster than the 7 kg object.. the 7 kg object accelerates three times faster than the 21 kg object.. both objects accelerate at the same rate because the force is the same.. neither object will accelerate because there is a net force on the objects. what is the acceleration due to gravity on mars? . . . a. . 9.8 m/s2 . . c. . 12.2 m/s 2 . . . b. . 3.7 m/s2 . . d. . 0.3 m/s2 . . the force that pulls falling objects toward earth is call