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PHYSICS HELP

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A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 66.0 kg and he a mass of 72.0 kg, and they start from rest 25.0 m apart.

A)Find his initial acceleration.
i put 7.68* 10^-12 m/s^2

B)Find her initial acceleration
i put 7.04*10^-12
*** FOR BOTH A and B anwsers its telling its wrong so can you help me out

C)If the astronauts' acceleration remained constant, how many days would they have to wait before reaching each other? (Careful! They both have acceleration toward each other.)

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