Answer the following question given this paragraph: 

In displacement versus time graphs, the slope of the line is the velocity of the object. In this case of a velocity versus time graph, the slope of the line is the acceleration. If you take any segment of this line and determine the to ratio, you will get 6.0 m/s 2 which we know to be the constant acceleration of this object.


Q: When two of these meet, the result is often a storm?

 Choices:

- air pockets

- electromagnetic waves

- tectonic plates

- air masses

A:
air masses
