Physics
Vidal25412
15

A Cannon shell is fired straight up from the ground at an initial speed of 225 m/s. after how much time is the shell at a height of 620 m above the ground and moving down.

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(1) Answers
saragracewilson

h = vt + gt^2/2 620 = 225t - 4.9t^2 t = 42.974 seconds

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