How does changing the horizontal position of the ball affect its potential energy?

Explanation:

Potential Energy is the energy associated with the object (having some mass) due to its position or state. It is a function of height and is dependent on datum i.e. it is measured relative to another body.

For example, if we change the body horizontally without changing its height then Potential energy associated with it is zero because there is no change in height.                

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.