The potential energy of an object is equal to the work required to lift it into position. true or false?

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

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?

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system