The block's mass is 11.0 kg, and it travels a total distance along the incline of 5.00 m, from the top to the bottom. The height of the incline is 3.00 m. What is the change in potential energy (in J) of the block-Earth system, from the block's initial position at the top to its final position at the bottom? (Be sure to include the correct sign.)  ____________J

Consider the following physical situations. Identify the forces which do work upon the indicated object (in boldface type) and categorize them as conservative or non-conservative forces. Then indicate whether the total mechanical energy of the object changes; it it changes, then indicate whether the change is a positive or negative change. Finally, indicate whether the potential energy and the kinetic energy changes; if PE or KE changes, then indicate whether the change is a positive or negative change. Description of Physical Situation Identity of Forces Which Do Work: Change in TME Change in PE Change in KE Conserv. Non- Conserv. Yes (+ or -) No Yes (+ or -) No Yes (+ or -) No a. A force is applied to move a physics cart from the floor to the top of an inclined plane at a constant speed. _________ _________ _____ _____ _____ _____ _____ _____ b. A physics student scurries up a flight of stairs at constant speed. _________ _________ _____ _____ _____ _____ _____…

Physics help! what is the work Wn done on the box by the normal force? so find Wn=____J   * hint given background information  "the work Ww done in the box of weight of the box is Ww= 1.8 J"   next find the work of Wfk done on the box by the force of kinetic friction? give your answer in: Wfk=___J     i have attached supporting details at the bottom.

A process occurs in which a system's potential energy decreases while the system does work on the environment. Does the system's kinetic energy increase, decrease, or stay the same? Or is there not enough information to tell? Explain. Match the words in the left column to the appropriate blanks in the sentences on the right. positive negative zero unknown ‒‒‒‒‒‒‒‒‒‒ only the potential energy does the work the system does work on the environment Submit the mechanical energy does not change the change in potential energy may be greater as well as less than the work the system does on the environment the body cannot do more work than the change of its potential energy Request Answer The change in kinetic energy is because Reset Help