The Affordable Care Act (ACA), also known as Obamacare, primarily aimed to:

To what does the term ‘social contract theory’ refer?

The doctrine of nullification is the claim that ______________________________.

The U.S. Constitution mainly discusses which of the following concepts?

Informal nullification is defined as when ____________________________________.

Which Constitutional amendment protects against unreasonable searches and seizures?

Suppose the total mass of helium in a balloon is 0.15 kg.  Assuming standard conditions, what volume does the helium occupy?  The density of helium under standard conditions is 0.18 kg/m3.

While taking off, a plane speeds up from 30 m/s to 50 m/s in 4 seconds.  What is its acceleration?

A 15 kg block has a 50 N force pulling to the left and a 5 N force pulling to the right.  What is the acceleration of the block?  Remember that acceleration is a vector.

A 2 kg ball is dropped from a height of 60 m.  How fast is it going just before it hits the ground?  Use energy.