
Concept explainers
a.
To find:When the particle is moving toward the right and the left.
a.

Answer to Problem 12E
Particle is moving Right 0 to 2 and left 2 to 4.
Explanation of Solution
Given: A particle is moving along a horizontal straight line.
The particle is moving towards the right derivatives is positive, which means that the function is increasing. In this curve it is increasing from 0 to 2 and from 4 to. It is moving to the left from 2 to 4.
b.
To find: When the particle is positive acceleration and negative acceleration.
b.

Answer to Problem 12E
Positive acceleration in 3 to 6 and negative acceleration in 0 to 3.
Explanation of Solution
Given:
The particle has positive acceleration when the second derivative is positive, which means that the function is concave up and has a positive acceleration from 3 to 6 and has a negative acceleration from 0 to 3.
Chapter 2 Solutions
Single Variable Calculus: Concepts and Contexts, Enhanced Edition
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