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Answers. Best Answer: The two objects are neutral to start with because they have an equal number of protons (positively charged) and electrons (negatively charged). When they are rubbed together, some of the electrons from one object are transfered to the other. This means that one object will have more electrons than protons, and thus have a negative charge, while the other will have more protons than electrons, and therefore a positive charge. Source(s):
In this project, you will be studying kinetic friction (also called sliding friction). When two objects are moving relative to one another, kinetic friction converts some of the kinetic energy of that motion into heat. You can feel the heat of kinetic friction if you rub your hands together. The same thing happens when two objects are sliding past one another-for example, when you push a box across the floor. Part of the energy of your pushing moves the box, and part of the energy is lost to kinetic friction.