A locomotive pulls 10 identical freight cars of mass =1.0 × 10^5 kg with an acceleration of = 5.0 m/s2. What is the magnitude 2,3 of the force between the second and third cars?

What is the magnitude 7,8 of the force between the seventh and eighth cars?

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.