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Mathematics, 23.09.2020 06:01 dbanks701
NASA uses a launch clock to measure time before and after lift-off. It takes 2 hours and 15 minutes of preparations on base, 20 minutes to travel to the launch pad, and 40 minutes of pre-launch checks once in the spacecraft. When should the astronauts begin preparation? β3 hours 15 minutes, because all the preparation times add to 3 hours and 15 minutes β3 hours 35 minutes, because all the preparation times add to 3 hours and 35 minutes β2 hours 35 minutes, because all the preparation times add to 2 hours and 35 minutes β2 hours 15 minutes, because all the preparation times add to 2 hours and 15 minute
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NASA uses a launch clock to measure time before and after lift-off. It takes 2 hours and 15 minutes...
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