Week 26 physics

Monday we started back up with work and energy. We talked more about the two topics so we can get refresh our memories after break. We said that energy could be Gravity, kinetic, or elastic. It also can be transferred or stored. Then we talked about work. Work is the force that you use to move something in the director of the force. If you throw a pen up and it moves upward then that is work, but when it falls down it is not work because earth is acting on it. We also talked about power. And power is based on rate and speed. The power formula is energy/time. We did a lab to calculate power. How you should calculate power is by using the gravational formula (mgh) and plugging your numbers in and your can substitute that for your energy. Then you put that over the time it took you to complete task. During this week we did a lab where we had to run, walk, or jog three flights of stairs. We did this to calculate our power and find out who was the most powerful in the class. We had to find out our mass, time, and the height of the stairs. We multiplied the mass, g-field, and the height and we divided it by the time and we got our power. Steve was the most powerful. And i was the second most powerful on the class We reviewed for our assessment on Thursday so we could make sure we knew everything On friday we took the test and overall i think i did pretty well because i felt as i knew what i was talking about.