Asked by Zack
A firework is launched from a cliff overlooking the ocean. The elevation of the firework shell, in feet above sea level, t seconds after launch is given by the expression -16t^2+157t+63. How high is the top of the cliff, in feet above sea level.
We just started and my teacher wasn't here today.
We just started and my teacher wasn't here today.
Answers
Answered by
Steve
Who needs a teacher? Just think a bit. Where is the ball to start with? At the top of the cliff.
That's when t=0.
So, plug in 0 for t and evaluate.
That's when t=0.
So, plug in 0 for t and evaluate.
Answered by
mckenna reed
63
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