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darkwhale
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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?
 one year ago
 one year ago
darkwhale Group Title
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?
 one year ago
 one year ago

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salini Group TitleBest ResponseYou've already chosen the best response.0
u know the acceleration on earth and moon for a given distance say x calculate teh time of motion
 one year ago

darkwhale Group TitleBest ResponseYou've already chosen the best response.0
2. t=Vo/A
 one year ago

imron07 Group TitleBest ResponseYou've already chosen the best response.0
Find h with this: \[v^2=v_0^2+2ah\] Since v=0 at highest point, you can find then: \[0=v_0^2+2ah \\h=\sqrt{\frac{v_0^2}{2a}}\\\frac{h_{m}}{h_{e}}=\frac{\sqrt{\frac{v_0^2}{2a_m}}}{\sqrt{\frac{v_0^2}{2a_e}}} \]
 one year ago

darkwhale Group TitleBest ResponseYou've already chosen the best response.0
\[\frac{ 9.81 }{ 1.67 }12.0\] h=70.6, but how do u solve the second part?
 one year ago

imron07 Group TitleBest ResponseYou've already chosen the best response.0
\[v=v_0gt\] again, \[v=0\] then you can find time traveled by wrench for each g's
 one year ago

darkwhale Group TitleBest ResponseYou've already chosen the best response.0
i'm not sure how to get Vo
 one year ago

darkwhale Group TitleBest ResponseYou've already chosen the best response.0
oh is it 12m/s?
 one year ago

imron07 Group TitleBest ResponseYou've already chosen the best response.0
You can find v0, but don't really need to. \[0=v_0gt\\t=\frac{v_0}{g}\\\frac{t_e}{t_m}=\frac{v_0/g_e}{v_0/g_m} \]
 one year ago

darkwhale Group TitleBest ResponseYou've already chosen the best response.0
but dont i need both Vo and t?
 one year ago

darkwhale Group TitleBest ResponseYou've already chosen the best response.0
\[\frac{ Te }{ Tm } =\frac{ 1.67 }{ 9.8 }\]
 one year ago

imron07 Group TitleBest ResponseYou've already chosen the best response.0
Correct :)
 one year ago

darkwhale Group TitleBest ResponseYou've already chosen the best response.0
so its 0.170?
 one year ago

imron07 Group TitleBest ResponseYou've already chosen the best response.0
Wait, i'm not native eng speaker. What do they mean when they say how much longer? If they mean \[\Delta t=t_mt_e\] then we're wrong. What we found is \[t_m=0.170t_e\].
 one year ago

darkwhale Group TitleBest ResponseYou've already chosen the best response.0
yeah Δt=tm−te
 one year ago
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