Someone pls help! My physics quiz is today:(

it should be -2m/s

Explanation:

Because it is going down from minutes 6-8. And down in most cases means negative. And since it is going down 2 it should be -2m/s.

Hope this helped!!

0m/s^2

Explanation:

This is a position vs time graph, so the slop of the line represents the velocity (if you do not understand why that is then feel free to ask).  Since the slope is constant (a straight line), we know that the velocity is not changing, in other words, the object is not accelerating.

show the wavelengths of a wave. show the crests of a wave.

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up