Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

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?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. salini Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    u know the acceleration on earth and moon for a given distance say x calculate teh time of motion

    • 2 years ago
  2. darkwhale Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    2. t=Vo/A

    • 2 years ago
  3. imron07 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Find h with this: \[v^2=v_0^2+2ah\] Since v=0 at highest point, you can find then: \[0=v_0^2+2ah \\h=\sqrt{\frac{-v_0^2}{2a}}\\\frac{h_{m}}{h_{e}}=\frac{\sqrt{\frac{-v_0^2}{2a_m}}}{\sqrt{\frac{-v_0^2}{2a_e}}} \]

    • 2 years ago
  4. darkwhale Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\frac{ 9.81 }{ 1.67 }12.0\] h=70.6, but how do u solve the second part?

    • 2 years ago
  5. imron07 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    \[v=v_0-gt\] again, \[v=0\] then you can find time traveled by wrench for each g's

    • 2 years ago
  6. darkwhale Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i'm not sure how to get Vo

    • 2 years ago
  7. darkwhale Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    oh is it 12m/s?

    • 2 years ago
  8. imron07 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    You can find v0, but don't really need to. \[0=v_0-gt\\t=\frac{v_0}{g}\\\frac{t_e}{t_m}=\frac{v_0/g_e}{v_0/g_m} \]

    • 2 years ago
  9. darkwhale Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    but dont i need both Vo and t?

    • 2 years ago
  10. darkwhale Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\frac{ Te }{ Tm } =\frac{ 1.67 }{ 9.8 }\]

    • 2 years ago
  11. imron07 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Correct :)

    • 2 years ago
  12. darkwhale Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so its 0.170?

    • 2 years ago
  13. imron07 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    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 \[t_m=0.170t_e\].

    • 2 years ago
  14. darkwhale Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah Δt=tm−te

    • 2 years ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.