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At what time after being ejected in the boulder moving at 20m/s upward if a large boulder is ejected from volcano with initial
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A large boulder is ejected vertically upward from a volcano with an initial speed of 39.0m/s . Air resistance may be ignored.
(a)
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a. V = Vo + g*t = 19 m/s. 39 - 9.8*t = 19 -9.8t = 19-39 = -20 t = 2.04 s. b. V = Vo + g*t = -19 m/s.
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and the question is?
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Key: *** = my answer
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I think its C.
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