A box has two forces acting on it One force, is 100 Nupward. Another force is 50N
downward. What is the net force on the bar

100Nupward
50 Nupward
50 N douaward
100 N downward

The answer for #3 is c but i don't know why

Which of the following units is not an official si unit? mole liter kilogram ampere

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?