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Suppose someone on the Moon throws a rock from a cliff 20 m above ground level with an upward velocity of 10 m/s (neglect the height of the individual for this problem).
(a) Find the position function given that a = −1.62 m/s² (acceleration due to gravity).
(b) When does the rock hit the ground?
(c) Calculate the velocity upon impact.


Sagot :

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