A cannon shell is fired straight up from the ground at an initial speed of 225m/s. After how much time is the shell at a height of 6.20*10 2 m above the ground and moving downward?

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A cannon shell is fired straight up from the
ground at an initial speed of 225m/s. After
how much time is the shell at a height of
6.20*10 2 m above the ground and moving
downward?
Transcribed Image Text:A cannon shell is fired straight up from the ground at an initial speed of 225m/s. After how much time is the shell at a height of 6.20*10 2 m above the ground and moving downward?
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