A paintball gun is pointed downwards and fires a paintball down at an unknown speed. Initially the paintball gun is 16 meters above the ground. When the paintball strikes the ground below it is traveling at a speed of 24 meters per second. How fast must the paintball gun have shot the paintball initially in meters per second?

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.

the answer you are looking for is d. there are no holes for blood to enter or leave the system. your welcome