Write down the physical State of the substance at t =15minutes​

Abird sitting high in a tree is an example of what type of wnergy

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.