What is the purpose of a free body diagram?

to show the velocity of a

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?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match