
Applications of Quadratics
Authored by Robert Martinez
Mathematics
9th Grade

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If path of a projectile is modeled by:
h(t) = -16t2 + 20t +6, what is the height after 1 second?
6 feet
20 feet
10 feet
4 feet
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An object flies through the air and follows a parabolic path. What does the y-axis represent?
time
height from the ground
horizontal distance
money
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial (starting) height of an object following this path? h(t) = -16t2 +20t + 6
-16 feet
0 feet
20 feet
6 feet
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A soccer ball is kicked from the ground with an initial upward velocity of 90 feet per second. The equation h=-16t2 + 90t gives the height h of the ball after t seconds.
What is the maximum height of the ball?
126.56 ft
5.625 sec
2.81 sec
90 ft
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A ball is thrown into the air with an upward velocity of 100 ft/s. Its height, h, after t seconds is given by the function
h = -16t2 + 64t + 960.
How many seconds did it take for the ball to reach its maximum height?
10 seconds
64 seconds
960 seconds
2 seconds
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