A cellist plucks the string of her instrument 0.01 m from equilibrium to play a note during a piece. If the string has a potential energy of 50 J when it is released, what is its velocity at 0.002 m

pe = weightxheight = 2000x1000=2,000,000joules

true tan speed = ang vel x radius

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.

we need to know the time interval during which the force acts. impulse of force = momentum change