Quadratic Projectile

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

• Time

• Height

• Distance

• Total

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. 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 upward velocity. Its height, h, after t seconds is given by the function below.
$h=-16t^2+64t+960$
How many seconds did it take for the ball to reach its maximum height?

Hint: look at the vertex and remember that x=seconds and y=height.

• 1024 meters

• 64 meters

• 960 meters

• 2 meters

A dolphin jumps from the water. The equation h = -16t² + 80t models the dolphin's height at any given time, t. What is the maximum height the dolphin jumps?

• 1 foot

• 5 feet

• 96 feet

• 100 feet

Find how many seconds it takes for the ball to reach the ground: y=-16x²+40x+1.5 Hint: Remember the quadratic formula?

• 2.54 sec

• -.037 sec

The maximum height of the ball is represented by the...

• y-intercept

• y coordinate of the vertex

• x-intercept

• x coordinate of the vertex

The number of seconds it take for the ball to reach its maximum heights is represented by the...

• y-intercept

• y coordinate of the vertex

• x-intercept

• x coordinate of the vertex

Given the Quadratic Equation: -16t² + 48t + 8 = 0.

Identify the values to use in the Quadratic Formula.

a = ​ ​ ​ (a)  

^{b =} ​ ​ ​ (b)  

c = ​ ​ ​ (c)  

• 16

• -48

• -8

• -16

• 48

• 8

A baseball is launched straight upward, from a height of 6.4 ft. with an initial velocity of 48 ft./sec. Given the vertical motion function: h(t) = -16t² + v₀t + h₀ , select the correct substitution into the formula.

​ (a)