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Today in Physics Mr. Manning began the class by having us read page 13. Page 13 stated the effects of work on a system. It first described in detail the work to lift an object. It said that the lifting force is equal to the weight of the object. It said that the displacement is the height to which the object is lifted. We also read that the stored energy and its ability to change the environment is known as potential energy. Page 13 also told us, that the work to move an object horizontally is related to the net force and the displacement. Moving horizontal objects is known as kinetic energy. After discussing this paper, we answered 7 questions about the horizontal and vertical work that we just learned about. One of the questions asked why the weight is equal to the lifting force. The answer turned out to be constant speed, or a net force of zero. Another question was why is the displacement the same as the change in height. The answer had to do with vertical motion. X1= H1 and X2=H2. After completing the questions Mr. Manning told us to read over the lab worksheet we collected when we walked in the room. The lab has to do with work and the amount of work that it takes for a nail to enter a block of wood. We will have to calculate the displacement of the nail. To calculate the displacement of the nail, we must first measure the nail by using a Vernier caliper. Mr. Manning showed us a video on how to read a Vernier caliper. It was very interesting and informative. Overall, we learned a lot of valuable information in physics today.