100m ÷ 50s = 2m/s
Just some simple divison.
B) Tension , is the correct answer
C. Number of protons = atomic number; number of neutrons = mass number - atomic number


Compounds contain two or more different elements.
Water is a molecule because it contains molecular bonds . Water is also a compound because it is made from more than one kind of element. (oxygen and hydrogen).
So If you like, you can say that water is a molecular compound.
HOPE IT HELPED YOU.