4. Why isn't full employment the same as zero unemploy-
ment?

Explanation:

Structural: This is a type of unemployment due to a change in demand or skill. ... Full employment is the same as zero employment because full employment is reached when there is no cyclical unemployment in the US. Zero unemployment is the idea where everyone is working and not one person doesn't have a job.

are there options? cause you ain’t. real specific

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.