SOLUTION: A projectile is fired straight upward from ground level with an initial velocity of 224 feet per second. (a) At what instant will it be back at ground level? In seconds (b)

Question 1056044: A projectile is fired straight upward from ground level with an initial velocity of 224 feet per second.
(a) At what instant will it be back at ground level?
In seconds
(b) When will the height exceed 768 feet? (Enter your answer using interval notation.)
Answer by ikleyn(52788)   (Show Source): You can put this solution on YOUR website!
.
A projectile is fired straight upward from ground level with an initial velocity of 224 feet per second.
(a) At what instant will it be back at ground level?
In seconds
(b) When will the height exceed 768 feet? (Enter your answer using interval notation.)
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See the lessons
    - Problem on an arrow shot vertically upward
    - Problem on a ball thrown vertically up from the top of a tower
in this site, where similar problems were solved.
They are your samples. Read them attentively and get trained in solution of such problems.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this textbook under the topic "Projectiles launched/thrown and moving vertically up and dawn".

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