an airplane flying east at an airspeed of 200km/hr has a headwind blowing from the east at 50km/hr. How far will the plane fly relative to the ground in 2hours?

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.

f=ma newton

f=100x2.5=250n