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physicsgurl12
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Homework Statement
As Halley’s comet orbits the sun, its distance from the sun changes dramatically, from 88700000000 m to 5614000000000 m. If the comet’s speed at closest approach is 53430 m/s, what is its speed when it is farthest from the sun if angular momentum is conserved?
Homework Equations
v=d/t ? i have no clue where to begin.
The Attempt at a Solution
my attempt was usless. i don't even know a formula to use.
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