Which of the following is not true about the decline in demand for unions in the u. s.? to some extent, protective legislation ensuring safety and income security has served to replace union representation. it can be largely attributed to the fact that individuals who experience union representation are unhappy with it and decide they do not want it. u. s. unions have not put enough money into union organizing and have therefore not done a good job of "selling" their services. employers may be more likely to listen to their employees and respond to their changing needs thus reducing employees' need for outside representation.

B. It can be largely attributed to the fact that individuals who experience union representation are unhappy with it and decide they do not want it.

Explanation:

It isn't a fact that most individuals who experience union representation are unhappy with it and they decide to not want the union. So you couldn't attribute this as a fact about the decline in demands for unions. Studies have found that unionized workers remain more time in their jobs in comparison to non unionized.    

Bender, K. A., & Sloane, P. J. (1998). Job Satisfaction, Trade Unions, and Exit-Voice Revisited. ILR Review, 51(2), 222–240.

we can solve this via the kinematic equation:

where the vertical velocity is zero and so:

since the height of the building is 29.3 meters then:

the ball was in motion for approximately 2.45 seconds