Answer:
Two objects with different masses collide and bounce back after an elastic collision.
The answer is D.
Factor production that could be changed during particular period is called Variable Factor of Productions.
Basically, factor of productions is divided to fixed and variable factor.
FIxed factors are the one that will always stay the same no matter how many products you made. For example electricity cost, building rent, etc
The variable factors differ depend on how product you produce, such as raw material.
I believe the answer is c) divided government.
The north was heavily dependent on industry while the south was dependent on agriculture. The southern economy was based on the free work they were getting from slaves the north did not need slaves as they were less dependent on agriculture
I'd say listen to her then go back to work.