2. 1D Motion / Kinematics
Vertical Motion and Free Fall
1:59 minutes
Problem 2x
Textbook Question
Textbook QuestionA large boulder is ejected vertically upward from a volcano with an initial speed of 40.0 m/s. Ignore air resistance. (a) At what time after being ejected is the boulder moving at 20.0 m/s upward?
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