12-16-08

As the bell rang all of the excited physics students shuffled into the room eager to learn about physics. Mr. Manning handed back the tests from the day before.Mr. Manning went over the problems, and explained why the first problem was subtracting vectors, the second problem was adding vectors and the last problem was vectors and components. For the first problem explained that the arrow pointed from the negative vector to the positive vector. For the second problem he pointed out that the resultant vector was to be drawn from the point of origin with the arrow on the opposite end. And for the final problem he explained that Mr. P could **NOT** be lifted by the wind and kite because he weighed more than the force the wind was exerting on the kite. After reviewing the test Mr. Manning began to teach new material. He taught vectors and trigonometry. In this the class also learned about the Pythagorean Theorem which is **Hypotenuse² = Opposite² + Adjacent²**. He showed the class that the pythagorean theorem would only work in a right triangle. He also explained that if you added the other angles, other than the right angle, they had equal 90°. He showed us a technique that would help us use the trig calculations, he said that before we started to do the math that we should first label the side, H- Hypotenuse, A- Adjacent and O- Opposite. The he explained how the trig calculations work. He then handed out a worksheet for the students to practice the new material.