Quadratic Situations Max Height of a Projectile

In Projectile Motion Quadratic Word Problems, what does the y-value always represent?

• Time

• Height

• Distance

• Total

Mrs. Martone's 7th grade science class built and launched rockets. The graph below shows the height, in feet, over time, in seconds, of a student's rocket. Use the graph to answer the questions below. How long was the rocket in the air?

• 1 second

• 7 seconds

• 14 seconds

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

Which equation matches the graph?

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Tags

CCSS.HSF-IF.C.7A

In Projectile Motion Quadratic Word Problems, what does the x-value always represent?

• Time

• Height

• Distance

• Total

A ball is hit into the air with an initial velocity of 100 ft/s. Its height, h, after t seconds is given by the function

h = -16t² + 100t + 5

How many seconds did it take for the ball to reach its maximum height?

• 3.654 seconds

• 2.451 seconds

• 161.25 seconds

• 3.125 seconds

A ball is thrown into the air with an initial velocity of 100 ft/s. Its height, h, after t seconds is given by the function

h = -16t² + 100t + 5.

What is the maximum height?

• 125.251 feet

• 161.25 feet

• 239.126 feet

• 115.25 feet

Mrs. Martone's 7th grade science class built and launched rockets. The graph below shows the height, in feet, over time, in seconds, of a student's rocket. Use the graph to answer the questions below. What was the maximum height the rocket reached?

• 25 feet

• 45 feet

• 65 feet

• 85 feet

A ball is thrown into the air with an initial velocity of 100 ft/s. Its height, h, after t seconds is given by the function

h = -16t² + 100t + 5.

When did the ball hit the ground?

• 6.300 seconds

• 11.251 seconds

• 5.369 seconds

• 7.458 seconds

Henry launched a model rocket from the ground with an initial speed of 88 feet per second. When will the rocket be 40 feet high?

• 0.5 sec, 5 seconds

• 0.5 seconds

• 5 seconds

• never