HELP!! Does the normal force really exist? How do we know one way or the other?

What is work? how much work is done to move an object 0 meters?

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

What os the equation of the line described below written in slope-intercept form? the line passing through point (0,0) and parallel to the line whose equation is 3x+2y-6=0