if a 1,300 kg car with no people inside is on the edge of a cliff 1,500 m above the ground, what is the kenetic energy?

B, if it was a lower watt she could put it in for her normal time and not burn it

Answer(a)   the matererials that are in contact, the two materials and the nature of their surfaces/// (b)/// the force pushing the two surfaces together, pushing the surfaces together causes the more of the asperities to come together and increases the surface area in contact with each other