Ball a has a mass of 5.0 kg. ball b has twice the mass of ball a. the two balls collide and stick together in a perfectly inelastic collision. after the collision the combined balls are at rest. if the velocity of ball a before the collision was 13 m/s, what was the velocity of ball b before the collision? a. 6.5 b. -6.5 m/s c. 26 m/s d. -13 m/s e. 0.0 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.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.