Los Angeles

We had the best time playing at Venice Beach!

New York

The atmosphere in New York is lorem ipsum.


Thank you, Chicago - A night we won't forget.

For in GOD we live, and move, and have our being. - Acts 17:28

The Joy of a Teacher is the Success of his Students. - Samuel Dominic Chukwuemeka

Welcome to MATTER

I greet you this day,
First: read the notes. Second: view the videos. Third: solve the questions/solved examples. Fourth: check your solutions with my thoroughly-explained examples.
Comments, ideas, areas of improvement, questions, and constructive criticisms are welcome. You may contact me.
If you are my student, please do not contact me here. Contact me via the school's system.
Thank you for visiting!!!

Samuel Dominic Chukwuemeka (Samdom For Peace) B.Eng., A.A.T, M.Ed., M.S


Students will:


  • Symbols and Meanings

  • $A$ = Mass Number or Nucleon Number
  • $Z$ = Atomic Number or Proton Number
  • $a$ = acceleration
  • $g$ = acceleration due to gravity
  • $AM$ = Atomic Mass
  • $amu$ = atomic mass unit
  • $RAM$ = relative atomic mass
  • $t$ = time of the motion of the projectile
  • $h$ = height of the projectile at time, $t$
  • $T$ = time of flight of the projectile
  • $H$ = maximum height
  • $t_H$ = time to reach the maximum height
  • $R$ = range
  • $R_{max}$ = maximum range
  • $\phi$ = angle of elevation/depression
  • $h_{below}$ = height below the horizontal


The Atomic Number or Proton Number of an element is the number of protons in one atom of the element.

The Mass Number or Nucleon Number of an element is the sum of the protons and neutrons in one atom of the element.