2-5+Ryan+Donovan

Today we went over The Effects of Work on a System. We talked about all the different equations we had to learn over the past and how they were able to join or be rewritten to create new equations. the new equations will help solve for work. Work is to move an object and to make it speed up. There are about 5 new equations we learned. The original work= EF(net force) times the change in position or displacement. We then had to answer 7 questions which were on the overhead about the sheet with all the equations on them. The questions asked how weight is equal to the lift force, and how the change in height is equal to the original height in most cases. We discussed how the weight and lifting force have to be equal because the weight is the amount of force needed for the object to be lifted into the air. Then we went over the change in height is equal to the height, because we usually start from 0 for both and then the change is the actually height of the object. We talked about all the different types of forces that are able to act on an object and the energies that are exerted. We started to run out of time so Mr. Manning briefly went of the rest of the questions. It was a short period so we couldn't really do much. He told us about a lab that we are going to start soon and the homework/ extra credit is now due on monday.