Math Problem Statement

Determine the maximum height for an object launched with the function h(t)=-16t^2+360t

Solution

To determine the maximum height of an object launched with the function h(t)=16t2+360th(t) = -16t^2 + 360t, we need to find the vertex of this parabolic equation, since the vertex will give us the maximum height (as the coefficient of t2t^2 is negative, indicating a parabola that opens downwards).

The vertex form of a parabola ax2+bx+cax^2 + bx + c is given by the vertex (h,k)(h, k), where h=b2ah = -\frac{b}{2a}. In our case, the function is:

h(t)=16t2+360th(t) = -16t^2 + 360t

Here, a=16a = -16 and b=360b = 360.

First, find the time tt at which the maximum height occurs:

t=b2a=360216=36032=11.25t = -\frac{b}{2a} = -\frac{360}{2 \cdot -16} = \frac{360}{32} = 11.25

Now, substitute t=11.25t = 11.25 back into the function h(t)h(t) to find the maximum height:

h(11.25)=16(11.25)2+360(11.25)h(11.25) = -16(11.25)^2 + 360(11.25)

Calculate (11.25)2(11.25)^2:

(11.25)2=126.5625(11.25)^2 = 126.5625

Now substitute and calculate:

h(11.25)=16126.5625+36011.25h(11.25) = -16 \cdot 126.5625 + 360 \cdot 11.25 h(11.25)=2025+4050h(11.25) = -2025 + 4050 h(11.25)=2025h(11.25) = 2025

Therefore, the maximum height of the object is 20252025 feet.

Would you like more details or have any questions?

Here are 5 questions you might consider asking:

  1. How do you determine the vertex of a parabola?
  2. Can you explain why the vertex represents the maximum height in this context?
  3. What are the units used in this problem?
  4. How does the coefficient of t2t^2 affect the direction of the parabola?
  5. Can this method be used for any quadratic function?

Tip: Always check the direction of the parabola (whether it opens upwards or downwards) to determine if you're finding a maximum or minimum value.

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Math Problem Analysis

Mathematical Concepts

Quadratic Equations
Vertex of a Parabola

Formulas

Vertex form of a parabola: h = -b/(2a)

Theorems

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Suitable Grade Level

Grades 9-12