What type of motion is occurring when the slope is zero?

When the slope is 0, it means that all forces are in equilibrium. Thus there's no force acting on the object, because the Fnet=0. No motion is occurring.

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.