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Alenkasestr [34]
3 years ago
7

An object dropped from rest from the top of a tall building on Planet X falls a distance feet in the first t seconds. Find the a

verage rate of change of distance with respect to time as t changes from to . This rate is known as the average​ velocity, or speed. The average velocity as t changes from to seconds is:________
Mathematics
1 answer:
ch4aika [34]3 years ago
7 0

Complete Question:

An object dropped from rest from the top of a tall building on Planet X falls a distance d(t)=13t^2 feet in the first t seconds. Find the average rate of change of distance with respect to time as t changes from t1=2 to t2=10. This rate is known as the average velocity, or speed.

The average velocity as t changes from 2 to 10 seconds is _______ feet/sec?

Answer:

v = 156

Step-by-step explanation:

Given

d(t)=13t^2

Time Interval: (a,b)

a = 2

b = 10

Required

Determine the average rate of change (v)

This is calculated as thus:

v = \frac{d(b) - d(a)}{b - a}

Substitute values for b and a

v = \frac{d(10) - d(2)}{10 - 2}

v = \frac{d(10) - d(2)}{8}

Calculate d(10): Substitute 10 for t

d(t)=13t^2

d(10) = 13 * 10^2

d(10) = 13 * 100

d(10) = 1300

Calculate d(2): Substitute 2 for t

d(t)=13t^2

d(2) = 13 * 2^2

d(2) = 13 * 4

d(2) = 52

The equation v = \frac{d(10) - d(2)}{8} becomes

v = \frac{1300 - 52}{8}

v = \frac{1248}{8}

v = 156

Hence, the average rate of change is 156ft/s

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