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(a)Calculate the height (in m) of a cliff if it takes 2.43 s for a rock to hit the ground when it is thrown straight

(a)Calculate the height (in m) of a cliff if it takes 2.43 s for a rock to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8.13 m/s. (Enter a number.) ________m

(b)How long (in s) would it take to reach the ground if it is thrown straight down with the same speed? (Enter a number.) ________s

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