Quadratics from Word Problems

Quiz
•
Mathematics
•
9th Grade
•
Hard
Anthony Clark
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A ball is thrown vertically into the air. Its height in feet after t seconds is given by the equation h(t) = –5t2 + 20t, and is graphed below. How high will the ball be after 3 seconds?
20 ft
15 ft
5 ft
10 ft
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The height of an object thrown into the air can be modeled by the formula h(t) = -16t2 + 70t + 95, where h(t) is in feet after t seconds.
What is the height of the object after 5 seconds?
95 feet
45 feet
70 feet
171.56 feet
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A raft is dropped from a helicopter 256 feet in the air above the ocean. Its approximate height, h, after t seconds is given by the function h(t) = -16t2 + 256. How many seconds did it take the raft to hit the water? (Round to the nearest whole number)
-4
2
4
8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation s(t) = –16t2 + 64t + 80. What will be the object's maximum height?
2 ft
80 ft
144 ft
64 ft
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you square 5 more than a positive number, the result is 88 more than 12 times the number. Find the numbers.
-9, 7
√75
9, -7
15, -5
6.
MULTIPLE CHOICE QUESTION
1 min • 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.
When did the ball hit the ground?
10 seconds
2 seconds
5 seconds
7 seconds
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In Projectile Motion Quadratic Word Problems, what does the x-value always represent?
Time
Height
Distance
Total
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