D. all of the above, although I do find it hard to believe something like flour would have a melting point, I looked up my answer to double check.
Answer:
bohr descirbed the atomic structure and found that electrons travel in separate orbits around the nucleus. jj thomson created the plum pudding model.
It 1:1 I had an online review and thats the answer it told me it was.
-Hope this helped you
Answer: acceleration
a = 5.36 m/s²
Explanation: solution attached:
Convert first 60 mi/h to m/s
Use the formula for acceleration
a = vf - vi /t