An object initially traveling at 20 Meters per second west accelerates uniformly at 4.0 meters per second squared east for 2.0 seconds The displacement of the object during these 2.0 seconds is

magnityde and direction

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.

a. are