Text Box: Constants and Equations for Part II g=-9.81 havg(each row)= (h1+h2+h3)/3 Δy= -.255 tt: Δy=Vit+1/2at2 Vi: Vf2=Vi2+2ahavg -Vit+ Δy=1/2at2 0= Vi2+2ahavg -1/2at2 -Vit+ Δy=0 Vi2=2ahavg t=(+Vi+√(〖Vi〗^2-4ac))/2a Vi=√2ahavg t=(+Vi+√(〖Vi〗^2-5.0031))/(9.81) Vi=√19.6*havg Vix=Vi*cos*(cellradians) Vi=4.43√havg Viy=Vi*sin*(cellradians) %error d= 100*(dt-dm)/dt dt= Vix*tt Text Box: Introduction In this lab we are using a marble launcher to launch marbles across the room. Using physics we are trying to find how far the marble flew at a given notch on the launcher and an angle. Procedure and Materials The materials needed for this lab are, a few marbles, a marble launcher, a meter stick to measure the distance, a stop watch to record time, and utilities to take down the data (pencil + Paper). We start by setting up the launcher, loading it, and shooting it, as this happens we start the watch to record time. After all of the data has been collected, it must then be put into a table. Havg must be solved for by adding up all the H values. Then, Vi must be calculated by using the information we know ( Vf=o, a=-9.81, y=-.225 and using eq. 4 to solve for vi.) the we make another chart, and solve for Viy and Vix, which is just using sin and cos. Tt is found with using a quadratic and it is simply using vi and the degrees. All of these equations can be understood more through the diagram below. Marble Launcher LabAmber Truhanovitch                                      November 1, 2007                                           dg                                           Group-C