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OpenStudy (anonymous):
25kg boulder is dropped over the ledge. The rock takes 8.0 seconds to fall 300m into the water. g=9.81N/Kg How do you calculate the average air resistance acting on the boulder?
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OpenStudy (anonymous):
@experimentX
OpenStudy (experimentx):
must be easy, find acceleration first. subtract it form g, multiply it my mass, you will find the total force applied by air resistance.
OpenStudy (anonymous):
acceleration is 9.4m/s2
OpenStudy (experimentx):
find he drop in accn
OpenStudy (anonymous):
find the answer, thank you !
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OpenStudy (anonymous):
i mean i found the answer, thank you for helping me !
OpenStudy (anonymous):
and this is my last question for awhile, thank you @experimentX
OpenStudy (experimentx):
sure ...wc
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