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spndsh
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Two Juptier sized planets are released from rest 1.0 x 10^11 m apart. What are their speeds as they crash into each?
 2 years ago
 2 years ago
spndsh Group Title
Two Juptier sized planets are released from rest 1.0 x 10^11 m apart. What are their speeds as they crash into each?
 2 years ago
 2 years ago

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imron07 Group TitleBest ResponseYou've already chosen the best response.1
The mechanical energy is conserved. 1/2 mv^2+Gm/r=constant From here we can find v and x as well.
 2 years ago

imron07 Group TitleBest ResponseYou've already chosen the best response.1
I mean r :)
 2 years ago

spndsh Group TitleBest ResponseYou've already chosen the best response.0
So m doesn't matter in this problem, right?
 2 years ago

imron07 Group TitleBest ResponseYou've already chosen the best response.1
Since it's equal, it cancels each other.
 2 years ago

imron07 Group TitleBest ResponseYou've already chosen the best response.1
Good luck :)
 2 years ago

spndsh Group TitleBest ResponseYou've already chosen the best response.0
wouldn't vf =0?
 2 years ago

imron07 Group TitleBest ResponseYou've already chosen the best response.1
What does vf stands for? final velocity?
 2 years ago

imron07 Group TitleBest ResponseYou've already chosen the best response.1
Lol, you're quite right. But the problem ask for v just the moment before collision. It isn't 0.
 2 years ago
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