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

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

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

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

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

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