Meg needs an electrician to do some work at her home. Her father advises her to make sure that the firm she plans to hire is not a closed shop. Meg is not sure what this means, but later learns that the "closed shop" that her father was referring to is:.

A firm that requires union membership by its workers as a condition of employment.

Explanation:

As the exercise suggests, a "closed shop" is a firm which requires union membership by its workers as a condition of employment be it to be hired or to remain at said firm, as a form of union security. So, in the example, what Meg's father is asking is that she makes sure that the firm the hires is not a closed shop, therefore, their workers does not necesarilly have to be in the union to be able to work.

a. formula: f=ma or f/m=a

10,000n/1,267kg≈7.9m/

b. formula: a= and s=d/t

speed= 394.6/15

s=26.3m/s

a=

a=1.75m/

c. 7.9-1.75=difference of 6.15m/

d. the force that most likely caused this difference is friction forces