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28 August, 03:18

A cannon shell is fired straight up from the ground at an initial speed of 242 m/s. after how much time is the shell at a height of 6.30 102 m above the ground and moving downward?

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  1. 28 August, 03:22
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    What does the 6.39 and 102 mean? They're confusing. I can probably answer if you tell ne
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