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Dylan and Sophia are walking along Bluebird Lake on a perfectly calm day. Dylan, determined to impress Sophia by his ability to skip rocks, picks up the flattest rock he can find and gives it a sidearm launch from the edge of the water. The rock acquires a completely horizontal velocity of 18 m/s from a height of 0.45 m above the water surface.
a. How much time does it take the rock to fall to the water surface?

Sagot :

Answer: 7.88

Explanation: just do your own method anything that helps

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