Calculate the momentum when a toy car of mass 140g moves at 5m/s

MOMENTUM= FORCE*MASS

= 140*5

= 700 kg⋅m/s

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.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle