Jacob+Mack-Boll+10-10-08

=//THE PHYSICS JOURNALIST//, OCTOBER 10, 2008= Today, class began with a daily question: we were suposed to describe a sample XT graph. The graph showed a curve that rose rapidly and then started evening out:



Description: The speed started out fast, and decreased as the position increased in a positive direction.

=**CLASSWORK**= Our class finished our lab on "XT Graphs of Objects in Freefall." This task was to analyze footage of someone throwing a basketball in the air, using the program //Logger Pro// to find the velocity/speed of the ball as it traveled through the air. Conclusions we reached were: 1) The balls velocity changes gradually over the whole flight. 2) Yes, the flight was symmetric. 3) The velocity of the was greatest right after it was released and right before it reached the bottom. It is least right before and right after the ball reaches the top of the flight.

=**HOMEWORK**= For homework, there is a paper called "XT Graph Descriptions." All 15 examples must have a written response, and each response must be a full sentence.

Also, next Tuesday there is a Quiz on XT graphs.