1. An 1800-kg truck moves to the south with a velocity of 9 m/s. 2. A 50-kg student has 100 kg•m/s of momentum to the west. How fast (in m/s) are they moving to the west?
3. A truck has a momentum of 5,000 units. What happens to the truck's momentum if the mass is cut in half?

50 inches should be the resultant vector

a and c

c is 100% but i am confused in a

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.

your answer is, orbit around the nucleus