Solve each equation for the specified variable. (Assume no denominators are 0.) See Example 8.
$h = - 16 t^{2} + v_{0} t + s_{0}$ , for t

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Start with the given equation: $h = -16t^2 + v_0 t + s_0$.

Rearrange the equation to set it equal to zero by subtracting $h$ from both sides: $0 = -16t^2 + v_0 t + s_0 - h$.

Rewrite the equation in standard quadratic form: $-16t^2 + v_0 t + (s_0 - h) = 0$.

Identify the coefficients for the quadratic formula: $a = -16$, $b = v_0$, and $c = s_0 - h$.

Use the quadratic formula to solve for $t$: $t = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$, substituting the values of $a$, $b$, and $c$.

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주요 개념

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Solving Quadratic Equations

A quadratic equation is a polynomial equation of degree two, typically in the form ax^2 + bx + c = 0. To solve for the variable, methods such as factoring, completing the square, or using the quadratic formula can be applied. Recognizing the equation's structure is essential for choosing the appropriate method.

Isolating the Variable

Isolating the variable means manipulating the equation to express the variable explicitly on one side. This often involves algebraic operations like addition, subtraction, multiplication, division, and factoring. The goal is to rewrite the equation so the variable is alone, making it easier to solve.

Understanding the Context of the Equation

The given equation h = -16t^2 + v_0t + s_0 models the height of an object under gravity over time. Recognizing that t represents time and that the equation is quadratic helps in interpreting solutions physically, such as identifying valid time values and excluding non-physical results like negative time.

Solve each equation for the specified variable. (Assume no denominators are 0.) See Example 8. h=−16t2+v0t+s0h = -16t^2+v_0t+s_0, for t