Quadratic Equation for Projective Motion

Lily wants to know how long her toy rocket will be in the air after she lights the fuse from the launch pad, she should _________.

• Use x = (-b/2a) as my answer.

• Set my equation = 0 and use the quadratic formula to solve.

• Find the y-intercept (constant).

• Find the y-coordinate of the vertex.

Jack wants to know how high the soccer ball will get if he kicks it straight up in the air, he should_____.

• Set my equation = 0 and use the quadratic formula to solve.

• Use x = (-b/2a) as my answer.

• Find the y-intercept (constant).

• Find the y-coordinate for the vertex.

Rachel wants to know how high the launch pad was that a rocket was launched from (the initial height), she should _____________.

• Find the y-intercept (constant).

• Use x = (-b /2a) as my answer.

• Find the y-coordinate of the vertex.

• Set my equation = 0 and use the quadratic formula to solve.

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?

• Positive Zero

• Axis of Symmetry

• Vertex

• y-intercept

What are the steps to solve the word problem: How long will it take to hit the water if you jump off the cliff using the formula: h=-16t^2_ + 8t +24?

• Plug the x at the vertex back into the equation.

• Calculate using the formula -b/2a

• Find the y-intercept (constant).

• Set h = 0 and use the quadratic formula to solve.

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 maximum height?

• Positive Zero

• Axis of Symmetry (x at the vertex)

• Vertex

• y-intercept

What are the steps to solve the word problem: What is the maximum height you can reach if you jump off the cliff with the formula: h=-16t^2_ + 8t +24?

• Set h = 0 and and use the Quadratic Formula to solve.

• Calculate using the formula -b/2a.

• Use the -b/2a and substitute that value into equation to find h.

• Find the y-intercept (constant).

Solve the word problem: How high was the cliff you jumped off of using the formula: h=-16t^2 + 8t +24?

• 32 feet

• 16 feet

• 8 feet

• 24 feet

Solve the word problem: How high would you jump if the equation for jumping from a cliff is: h = -16t^2 + 8t + 24?

• 25 feet

• 24 feet

• 8 feet

• 26 feet

Solve the word problem: How long will it take to reach the maximum height if you jump from a cliff with the formula: h=-16t^2 + 8t +24?

• 64 seconds

• 0.25 seconds

• 4 seconds

• 0.5 seconds