HELP! In space, astronauts don’t have gravity to keep them in place. That makes doing even simple tasks difficult. Gene Cernan was the first astronaut who worked on a task outside a spaceship. He said of the experience, “Every time I’d push or turn a valve, it would turn my entire body at zero gravity. I had nothing to hold on to.” As he worked, Gene Cernan’s heart rate and temperature went so high that his fellow astronauts worried that he wouldn’t survive.
Think about routine tasks that astronauts might need to do inside and outside a spaceship. Choose several tasks, and describe the features the ship and spacesuits should have to account for zero gravity as the astronaut completes the task. Use Newton’s laws of motion in your analysis.
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Things like going to the bathroom, brushing your teeth, and so on are probably more difficult for astronauts in space. According to Newton's laws of motion, "if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force," it will "remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force." Astronauts are in a permanent state of unbalance over which they have no control. Simple tasks such as drinking water, which you have done numerous times before, have now become more complicated. Showering in space is also not the same as it is on Earth; astronauts must apply liquid soap and water from pouches to their skin, and clean their hair with rinse-less soap and a little water.