Is drag a contact or non contact force

In my opinion i think it is a force because its showing frictional force consisting of two surfaces touching one another, in conclusion drag is a force

Some type of thing that was invisible

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.