Answer:
<u>Displacement (km)</u>
Explanation:
The y axis is the vertical axis pointing up and down. This is labeled as the the displacement (km) in the graph.
The Kinetic<span> Molecular </span>Theory<span> explains the forces between </span>molecules<span> and the energy that </span>they<span> possess.
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These two forces are called action and reaction forces and are the subject of Newton's third law of motion.
<em>Have a luvely day!</em>
It's called d. a glissando (glissando means "to slide" - which is how you play one)