(Answered) A cannon fires a shell straight upward 19 s after it is

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A cannon fires a shell straight upward; 1.9 s after it is launched, the shell is moving upward with a speed of 16 m/s. Assuming air resistance is negligible, find the speed (magnitude of velocity) of the shell at launch and 4.9 s after the launch. (a) at launch m/s (b) 4.9 s after the launch m/s

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