What do you call the point of interest on a velocity versus time graph?

Explanation:

The principle is that the slope of the line on a velocity-time graph reveals useful information about the acceleration of the object. If the acceleration is zero, then the slope is zero (i.e., a horizontal line). If the acceleration is positive, then the slope is positive (i.e., an upward sloping line).

ill do it for 100, also this isnt 80 its 40

15.3 cos 65 degrees trig