An object moves along a horizontal coordinate line such that its directed distance from the origin at any time t (in seconds) is given by s(t) = –t³ + 9t² – 15t (in meters). (a) Give the position of the object at the instances when it is changing direction. (b) At which time interval(s) is the object slowing down?

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.2: Introduction To Conics: parabolas
Problem 4ECP: Find an equation of the tangent line to the parabola y=3x2 at the point 1,3.
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An object moves along a horizontal coordinate line such that its directed distance from the origin
at any time t (in seconds) is given by s(t) = -t3 + 9t? – 15t (in meters).
(a) Give the position of the object at the instances when it is changing direction.
(b) At which time interval(s) is the object slowing down?
Transcribed Image Text:An object moves along a horizontal coordinate line such that its directed distance from the origin at any time t (in seconds) is given by s(t) = -t3 + 9t? – 15t (in meters). (a) Give the position of the object at the instances when it is changing direction. (b) At which time interval(s) is the object slowing down?
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