Two carts,A and B,are connected by a rope 39 ft long that passes over a pulley (see the figure below).The point Q is on the floor 12 ft directly beneath and between the carts.Cart A is being pulled away from Q at a speed of 2 ft/s.How fast is cart B moving toward Q at the instant when cart A is 5 ft from Q? 
Definitions:
Field of Education
An area of study or a branch of knowledge that is taught and researched within the educational system.
Zone of Proximal Development
The variance in performance between tasks a student can handle alone and those they can accomplish with the assistance and positive reinforcement of an experienced mentor.
Form of Learning
Refers to the various methods or ways through which individuals acquire knowledge, skills, and behaviors, such as observational learning or experiential learning.
Egocentrism
A cognitive trait where an individual is unable to understand that other people have their own perspectives and feelings.
Q3: Find a function <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB2067/.jpg" alt="Find a
Q17: Across many service industries,the nature of the
Q25: Verify that the function satisfies the three
Q30: According to the services marketing mix framework,<br>A)the
Q37: Evaluate the integral or show that it
Q39: The circumference of a sphere was measured
Q41: Short-term profitability and maximization of revenues from
Q42: _ occurs when customers become angry about
Q48: Use differentials to estimate the amount of
Q59: A contour map for a function f