Answer Happy

unclear text is: Epi + Eki = Epf+ Ekf
Open the video entitled Pole Vault and play it through as many times as required to answer the questions below. You may need to do a little research to assist with some of the questions Energy Transformations For closed, isolated systems that include only mechanical energy (gravitational and kinetic energies) we normally state our Law of Conservation of Energy as follows Total mechanical energy before-Total mechanical energy after E+EE+E 1. Describe the mechanical energy transformations involved up until the athlete reaches the top (apex) of his jump. Be sure to discuss what type of mechanical energy is present or stored at three locations: i Running down the track: Halfway up to the top where the pole reaches its maximum bend: iii. At the maximum height: 2. State the Law of Conservation of Energy in the form of a three-way equation (A-B-C) that summarizes the above in the form of a simple equation Law of Conservation of Energy (most basic equation where we include only E, and E) Running down the track fenergy)-half way up (energy)-op (energy) 3. What would you need to measure to determine whether or not mechanical energy has been conserved for this jump? How could you prove that the athlete's initial energy is the same as the final energy at the apex of the jump? 4. When using Newtonian Mechanics it is necessary to take measurements from the centre of mass. This will become the "spot" that you will keep track of for calculation considerations (heights and velocities should be measured from this point). Where is the centre of mass for this athlete? How does the position of his body affect its location? Hint: Watch the video under resources to help you with this