You hold your physics textbook in your hand. (assume that no other objects are in contact with the book.) (a) identify the forces acting on the book. (select all that apply.) book on hand hand on book floor on book earth on book

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

What is a subatomic particle with a negative charge and very little mass?