An astronaut jumps straight upward on the moon. Her legs generate a force magnit
ID: 2138229 • Letter: A
Question
An astronaut jumps straight upward on the moon. Her legs generate a force magnitude that is equal to 2.5 times her weight on earth. Which of the following equations acurately describes the work done during the jump and her potential energy at the top of the jump? m is her mass , g is gravitaional acceleration on earth, c is distance through which she moves her center of mass, and H is the height she reaches
A. 2.5mgc=(mg/6)(H+c)
B.2.5mgH=(mg/6)(H+c)
C.2.0(mgc/6)=(mg/6)(H+c)
D.2.5(mgH/6)=(mg)(H+c)
E.2.5mgc=(mg/6)(H)
Explanation / Answer
2.5mgc is the work done by the force, the gain in potential energy is H*mg/6
E is the answer
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