20.1-Applications of quadratics -1 Projectile motion

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?

• -4

• 2

• 4

• 8

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.CED.A.1

What algebraic term are you solving for if the word problem is: The equation for leaping off a cliff is h = -16t^2 + 8t +24.  How long will it take for you to hit the water?

• Roots (Solutions)
• Axis of Symmetry
• Vertex
• y-intercept

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

CCSS.HSA.REI.D.11

Superman kicks a ball into the air.  The path can be found using the equation d(t) = -16t²+ 48x, how long is the ball above 30 feet?

• 1 seconds
• 5 seconds
• 4 seconds
• 6 seconds

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.A.1

CCSS.HSA.CED.A.3

CCSS.HSA.REI.D.10

What is the Vertex of the graph?

• (-4, -4)

• (0, 0)

• (-8, 0)

• (-2, -3)

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

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

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

A ball is thrown into the air 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

A ball is thrown into the air is given by the function

h = -16t² + 64t + 960.

What is the maximum height?

• 960 feet

• 1008 feet

• 1024 feet

• 1152 feet

A ball is thrown into the air is given by the function

h = -16t² + 64t + 960.

When did the ball hit the ground?

• 10 seconds

• 2 seconds

• 5 seconds

• 7 seconds