Names: AP Physics 1: Lab - Projectile Range Purpose: To predict where your projectile is going to land and to catch your projectile at the predicted location. Period: Date: Part I: Design and carry out a lab to measure the initial speed of the steel ball shot by a projectile launcher (use the 3rd click). Please make sure that you record the launcher (the launcher used: _ ) you use for this part, because you will need to use the same launcher for Part II. For Part I only, write a full lab report. For part II, please use this handout for your report and attach it to the end of the full report for Part I. Usually, a full report should include the following parts: Purpose, material, lab setup with simple diagram(s), procedures, raw data & processed data in a table (if applicable) , data analysis (including sample calculation(s), graph(s), etc.), conclusion and error analysis (including sources of uncertainty/error). Part II: 1. Using the initial speed you found in Part I, predict (by calculation) the horizontal ranges of the projectile shot at 30, 450 and 60 above the horizontal. Use the same initial speed you found in Part I. Let the projectile land at the same height as the muzzle. Show your work clearly. Please staple the calculation sheets to this group report when you turn it in. 2. Set up the same projectile launcher as used in part I, place a sandbox at the calculated range, make sure that the top of the sand is at the same height as the muzzle, shoot the projectile, and measure the actual horizontal range of the projectile. You must shoot at least one angle in front of your teacher (Teacher initial: . You will be scored by the accuracy of your prediction. Do you notice anything special about the ranges for 30 and 60 ? Angle () Calculated range Actual range (the difference = lpredicted range - measured rangel / (m measured range) (m) predicted range) x 100 % 30 450 60 Which of the three angles gives you the greatest range? Sources of Error