Ricky+TPJ+1

Ricky Torres 10/27/08

On Thursday we got a packet on how to use graphs to solve problems. By the end of the packet our goal was to be able to solve questions such as the average velocity during acceleration, final speed at the end of acceleration ect.. To solve questions like these there are three different ways: by looking at the velocity-time graph, Kinematic equations, and Linear Motion Diagrams. Just looking at the graph’s slope and finding its area can determine the displacement of the object. The Kinematic equations can be used to find almost anything suc as average velocity, average acceleration, displacement, and final velocity. These are found through kinematic equations which I do not know how to type in the compute, but they consist of variables that you just plug in the numbers and solve for the missing variable. The equations are also good because you can solve for any variable that is in the equation just by singling it out and solving the equation. The final method that we learned, Linear Motion Diagrams, was the only new thing that we really learned. All they do is make a visual of what is going on with the motion in what the graph is showing. You do this by first seeing if the object is slowing down or speeding up, and whether it is going in a positive direction or negative. Once you have this determined, then you make a rough drawing or the object( car, person, blah blah) and underneath write acceleration and velocity and put a plus if its positive or minus if it’s negative and draw and arrow too(left is negative, right is positive), and then you’re done

Example of LMD: