Astronaut picks up a rock
On a planet far, far away, an astronaut picks up a rock. The rock has a mass of 4.80 kg, and on this particular planet its weight is 40.8 N. If the astronaut exerts an upward force of 50.0 on the rock, what is its acceleration?
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A 2016 survey of undergraduate students considered this further and found that compared with students that did not use cannabis at least once
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