3-3-09

Today's first period class was a breath a fresh air. Mr. Manning welcomed everyone in and as the students began to sit down, they realized today was a brand new beginning, Today was the start of a new unit! Unit 8 started out with the usual notes and reading guide. This unit is called Uniform Circular Motion. Through these notes we found that frequency is the number of revolutions per time. A period is labeled as T and is the reciprocal of frequency. Also, the direction of the velocity is tangent to the circle. Notice this in the link to the picture here. The formula we use in this unit is Tangential Speed= (2(pie)radius)/ T. Remember T= the period NOT time. When we know this formula we can find any one of these units. This really helps when we are trying to figure out exactly how a roller coaster works. Mr. Manning said to pay attention especially in this chapter because it will help the students to fill out their Hershey Park packets they will have to do in two months much faster. The class started to ask Mr. Manning about Hershey Park and when it would be. He said it would not be on "Physics Day" this year, but that each class was absolutely aloud to go on the trip. After we learned through the notes, Mr. Manning let us spend the rest of the class period working on problems on page three. Number 1 the answer is: the period = 1/7seconds. Finally, in number two the answer is: 5/60seconds. In number three the answer is: the period equals 75. In number four the answer is: .066. If you have trouble understanding any of these concepts be sure to contact Mr. Manning as soon as possible. Have a great day!!