The position of an object moving vertically along a line is given by the function s(t)=−16t2+128ts\left(t\right)=$$-16t^2+128ts(t$$)=−16t2+128t. Find the average velocity of the object over the following intervals.[1,2]\left\lbrack1,2\right\rbrack[1,2]

Ch. 2 - Limits

Briggs - Calculus: Early Transcendentals 3rd Edition

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Briggs 3rd Edition

Ch. 2 - Limits

Problem 13c

Chapter 2, Problem 13c

The position of an object moving vertically along a line is given by the function $s$\left$(t$\right$)=-16t^2+128t$ . Find the average velocity of the object over the following intervals.
$\left\[\lbrack\)1,2\(\right\]\rbrack$

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Identify the formula for average velocity over an interval [a, b], which is given by the change in position divided by the change in time: $ v_{avg} = \frac{s(b) - s(a)}{b - a} $.

Substitute the given interval [1, 2] into the formula, where $ a = 1 $ and $ b = 2 $.

Calculate the position at $ t = 2 $ using the function $ s(t) = -16t^2 + 128t $. Substitute $ t = 2 $ into the equation to find $ s(2) $.

Calculate the position at $ t = 1 $ using the same function. Substitute $ t = 1 $ into the equation to find $ s(1) $.

Substitute $ s(2) $ and $ s(1) $ into the average velocity formula: $ v_{avg} = \frac{s(2) - s(1)}{2 - 1} $, and simplify to find the average velocity over the interval [1, 2].

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Position Function

The position function describes the location of an object at any given time. In this case, the function s(t) = -16t² + 128t represents the vertical position of an object in motion, where 't' is time. Understanding this function is crucial for analyzing the object's movement and calculating other related quantities like velocity.

Average Velocity

Average velocity is defined as the change in position divided by the change in time over a specific interval. It can be calculated using the formula: Average Velocity = (s(t2) - s(t1)) / (t2 - t1), where s(t) is the position function. This concept is essential for determining how fast the object is moving on average between two points in time.

Interval Notation

Interval notation is a mathematical notation used to represent a range of values. In this question, the interval [1, 2] indicates that we are interested in the object's motion from time t = 1 to t = 2. Understanding interval notation is important for correctly interpreting the time frame over which the average velocity is calculated.

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$\left\[\lbrack\)0,3\(\right\]\rbrack$

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The position of an object moving vertically along a line is given by the function $s$\left$(t$\right$)=-16t^2+128t$ . Find the average velocity of the object over the following intervals.

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Let $g$\left$(x$\right$)=$\frac{x^3-4x}{8\left|x-2\right|}$$ . <IMAGE>

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The position of an object moving vertically along a line is given by the function s(t)=−16t2+128ts\(\left\)(t\(\right\))=-16t^2+128ts(t)=−16t2+128t. Find the average velocity of the object over the following intervals.[1,2]\(\left\[\lbrack\)1,2\(\right\]\rbrack\)[1,2]

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Key Concepts

Position Function

Average Velocity

Interval Notation

The position of an object moving vertically along a line is given by the function $s\(\left\)(t\(\right\))=-16t^2+128t$ . Find the average velocity of the object over the following intervals.
$\left\[\lbrack\)1,2\(\right\]\rbrack$