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

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

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter8: Introduction To Functions

Section8.10: Inverse Variation

Problem 3ST

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Question

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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