The density of water is 1000 kg m^3. What is the value expressed in gcm^-3 units? please help me.. (1) 1000 (2) 100 (3) 1 (4) 0.1 (5) 0.01

During the apollo moon missions, astronauts were concerned about the effects of newton's third law of motion when: o a. they ejected waste water, because they were concerned that it would push them off course. o b. they reentered earth's atmosphere, because they were carrying heavy moon rocks. o c. they took off from earth, because a large force was required to generate large acceleration. o d. they detected incoming space debris, because the inertia of the debris could damage their ship.