These are questions related to causes of friction!
Help is appreciated ^.^


If we repeat the slide of the plastic but wet the table first, what will happen? More friction or less?

If we spray a little oil on the wet table and repeat the sliding experiment, what will happen?

What would happen if you tried to slide a rubber eraser across the table? Why?

Match the atomic particles with their characteristics. 1. made of two protons and two neutrons neutron 2. similar to an electron; positive charge neutrino 3. orbits nucleus; negative charge positron 4. bundle of energy; zero charge proton 5. found in nucleus; positive charge meson 6. very unstable; +, -, or zero charge gamma 7. found in nucleus; zero charge electron 8. negative particle; negative charge beta 9. atomic energy converted to mass alpha

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?