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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?
 one year ago
 one year 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?
 one year ago
 one year ago

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imron07Best 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.
 one year ago

spndshBest ResponseYou've already chosen the best response.0
So m doesn't matter in this problem, right?
 one year ago

imron07Best ResponseYou've already chosen the best response.1
Since it's equal, it cancels each other.
 one year ago

imron07Best ResponseYou've already chosen the best response.1
What does vf stands for? final velocity?
 one year ago

imron07Best 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.
 one year ago
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