If a rock is thrown vertically upward from the surface of Mars with velocity 15 mys, its
Chapter 3, Problem 9(choose chapter or problem)
If a rock is thrown vertically upward from the surface of Mars with velocity 15 mys, its height after t seconds is h 15t 2 1.86t 2 . (a) What is the velocity of the rock after 2 s? (b) What is the velocity of the rock when its height is 25 m on its way up? On its way down?
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