Shelf Part A An astronaut of mass 230 kg including his suit and jet pack wants to acquire a velocity of 2.3 m/s to move back toward his space shuttle. Assuming the jet pack can eject gas with a velocity of 36 m/s , what mass of gas will need to be ejected? Mastering Physics: HW 6A - Google Chrome 0 X Express your answer to two significant figures and include the appropriate units. session.masteringphysics.com/myct/itemView?mode=myAnswers&assignmentProbleml... HA ? Submitted Answers m = ANSWER 1: 14.7 kg m = 14.7 kg Submit Previous Answers Request Answer Review your calculations and make sure you round to 2 significant figures in the last step. X Incorrect; Try Again; 4 attempts remaining