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Frank kicks a soccer ball off the ground and in the air with an initial velocity of 30 feet per second. Using the formula H(t) = −16t2 + vt + s, what is the maximum height the soccer ball reaches?
14.1 feet
13.7 feet
13.2 feet
15.2 feet
 one year ago
 one year ago
Frank kicks a soccer ball off the ground and in the air with an initial velocity of 30 feet per second. Using the formula H(t) = −16t2 + vt + s, what is the maximum height the soccer ball reaches? 14.1 feet 13.7 feet 13.2 feet 15.2 feet
 one year ago
 one year ago

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zeppBest ResponseYou've already chosen the best response.3
We are looking for the highest point of a facing down parabola, therefore the vertex of the parabola.
 one year ago

SmoothMathBest ResponseYou've already chosen the best response.0
Do your thing, Zeppy.
 one year ago

Nick2019Best ResponseYou've already chosen the best response.0
lol i should have read the chapter :/
 one year ago

Nick2019Best ResponseYou've already chosen the best response.0
lol so whats the answer, nice drawing
 one year ago

SmoothMathBest ResponseYou've already chosen the best response.0
The eeeeye, it sees everything!
 one year ago

Nick2019Best ResponseYou've already chosen the best response.0
lol i moved my webcam away from me haha
 one year ago

zeppBest ResponseYou've already chosen the best response.3
H(t) = −16t2 + vt + s Represents the equation of your parabola, we are looking for the vertex, the xvalue of the vertex could be found by using the formula \[\frac{b}{2a}\]
 one year ago

Nick2019Best ResponseYou've already chosen the best response.0
so one of these 14.1 feet 13.7 feet 13.2 feet 15.2 feet
 one year ago

zeppBest ResponseYou've already chosen the best response.3
Now, 30 feet per second. v=30 H(t) = −16t2 + 30t + s
 one year ago

zeppBest ResponseYou've already chosen the best response.3
Use the formula I wrote above :)
 one year ago

Nick2019Best ResponseYou've already chosen the best response.0
dont know how to solve that :/ i just need the answer no offence
 one year ago

Nick2019Best ResponseYou've already chosen the best response.0
ok il guess thanks for the help (in a good way)
 one year ago

zeppBest ResponseYou've already chosen the best response.3
A quadratic equation is \(ax^2+bx+c\) Where the x of the vertex is at \(\large \frac{b}{2a}\) In our equation H(t) = −16t2 + 30t + s b is 30 and a is 16 \[\frac{30}{2(16)}=\frac{30}{32}=\frac{30}{32}\]
 one year ago

zeppBest ResponseYou've already chosen the best response.3
What you have to do next it to replace this xvalue back into the equation to find the height (yvalue) And sorry I'm at work so I was afk :(
 one year ago
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