A 100 N applied force is required to keep a 780 N box moving at a constant velocity across a warehouse floor, What is the frictional force on the box? What is the mass of the box?

this isn't the answer but they're the graphs

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

inverse v=i*r

nice nice