A ball falls d metres in seconds. d is directly proportional to the square of t. The ball falls 44.1 m in 3 seconds. (a) Find a formula for d in terms of t. y=kx d = k t² k-d = 44.1 32 d = kt² K = 4.9 d=4.9±² 4.9±² 2

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
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Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 7ECP: The kinetic energy E of an object varies jointly with the object’s mass m and the square of the...
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A ball falls d metres in seconds.
d is directly proportional to the square of t.
The ball falls 44.1 m in 3 seconds.
(a) Find a formula for d in terms of t.
y=kx
d = k t²
k-d
=
44.1
32
d = kt²
K = 4.9
d=4.9±²
4.9±²
2
Transcribed Image Text:A ball falls d metres in seconds. d is directly proportional to the square of t. The ball falls 44.1 m in 3 seconds. (a) Find a formula for d in terms of t. y=kx d = k t² k-d = 44.1 32 d = kt² K = 4.9 d=4.9±² 4.9±² 2
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