An object moving in a straight line travels s(t) kilometers in t hours, where s(t) = 8t² + t. (a) What is the object's velocity when t = 3? (b) How far has the object traveled in 3 hours? (c) When is the object traveling at a rate of 3 km/h?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
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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An object moving in a straight line travels s(t) kilometers in t hours, where s(t) = 8t² + t.
(a) What is the object's velocity when t = 3?
(b) How far has the object traveled in 3 hours?
(c) When is the object traveling at a rate of 3 km/h?
Transcribed Image Text:An object moving in a straight line travels s(t) kilometers in t hours, where s(t) = 8t² + t. (a) What is the object's velocity when t = 3? (b) How far has the object traveled in 3 hours? (c) When is the object traveling at a rate of 3 km/h?
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