anonymous
  • anonymous
Astronauts on our moon must function with an acceleration due to gravity of 0.170g . If an astronaut can throw a certain wrench 12.0m vertically upward on earth, how high could he throw it on our moon if he gives it the same starting speed in both places? How much longer would it be in motion (going up and coming down) on the moon than on earth?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
u know the acceleration on earth and moon for a given distance say x calculate teh time of motion
anonymous
  • anonymous
2. t=Vo/A
anonymous
  • anonymous
Find h with this: \[v^2=v_0^2+2ah\] Since v=0 at highest point, you can find then: \[0=v_0^2+2ah \\h=\sqrt{\frac{-v_0^2}{2a}}\\\frac{h_{m}}{h_{e}}=\frac{\sqrt{\frac{-v_0^2}{2a_m}}}{\sqrt{\frac{-v_0^2}{2a_e}}} \]

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anonymous
  • anonymous
\[\frac{ 9.81 }{ 1.67 }12.0\] h=70.6, but how do u solve the second part?
anonymous
  • anonymous
\[v=v_0-gt\] again, \[v=0\] then you can find time traveled by wrench for each g's
anonymous
  • anonymous
i'm not sure how to get Vo
anonymous
  • anonymous
oh is it 12m/s?
anonymous
  • anonymous
You can find v0, but don't really need to. \[0=v_0-gt\\t=\frac{v_0}{g}\\\frac{t_e}{t_m}=\frac{v_0/g_e}{v_0/g_m} \]
anonymous
  • anonymous
but dont i need both Vo and t?
anonymous
  • anonymous
\[\frac{ Te }{ Tm } =\frac{ 1.67 }{ 9.8 }\]
anonymous
  • anonymous
Correct :)
anonymous
  • anonymous
so its 0.170?
anonymous
  • anonymous
Wait, i'm not native eng speaker. What do they mean when they say how much longer? If they mean \[\Delta t=t_m-t_e\] then we're wrong. What we found is \[t_m=0.170t_e\].
anonymous
  • anonymous
yeah Δt=tm−te

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