What happens to particles of a substance as its temperature increases? A the average kinetic energy increases B the average kinetic energy decreases C the average kinetic energy stays the same D nothing happens

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?