According to the graph of displacement vs. time, what is the object's velocity at a displacement of 0.2 meters?

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation:

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.

i would say