This experiment was divided into two parts. For the first part of the experiment, the was intentionally manipulated. This was the independent variable. The dependent variable measured was the. For the second part of the experiment, the was intentionally manipulated. This was the independent variable. The dependent variable measured was the .

Answer choices:
Mass of the cart
Acceleration of the cart
Force applied to the cart

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).