Review for Quadratic Applications Test

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 

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

CCSS.HSA.REI.D.10

An object flies through the air and follows a parabolic path. Which of these typically represents the x-axis? 

• time 
• height from the ground 

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 

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

So for a projectile whose equation is written in standard form:  y = ax² + bx + c, which letter tells us the starting/initial height? 

• a
• b
• c
• x

Tags

CCSS.HSA.SSE.A.1

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 

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

To calculate the TIME that a maximum height occurs, you should use: 

• -b/(2a) 
• Quadratic formula 
• the c value 
• 0

Tags

CCSS.HSA.REI.B.4

For that same projectile, at what TIME does the maximum height occur? 
h(t) = -16t² + 20t + 6 

• 0 seconds 
• .625 seconds 
• 160 seconds 
• 2 seconds 

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

CCSS.HSA.CED.A.1

To calculate the maximum height, you should: 

• Use the time you got from -b/(2a) and plug it in for each "t" 
• -b/(2a) 
• use the c value 
• use the b value 

Tags

CCSS.HSA.REI.B.4

What is the maximum height for that same projectile? (time of maximum height was .625) 
h(t) = -16t² + 20t + 6 

• 8.5 feet 
• 12.25 feet 
• 24.75 feet 
• 6 feet 

Tags

CCSS.HSA.SSE.A.1

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

If we are trying to find out when an object hits the GROUND, what should we put in for "h"? 

• 0
• 1
• 2
• 3

Tags

CCSS.HSA.SSE.A.1

CCSS.HSA.REI.B.4

CCSS.HSA.CED.A.1