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Unformatted text preview: COMPUTER EXERCISE #3 SOLUTION: Phys 0174 Fall 2008 P. Koehler Names of team members: P. Koehler Date due: (Max. = 60) Answers to Problem 1: The baseball hits the ground at time tBf= 3.50 s The marble hits the ground at time tMf= 1.75 s The baseball hits the ground with velocity vyBf=-25.7 m/s The marble hits the ground with velocity vyMf=-25.7 m/s Answers to Problem 2: time [s] xA [m] yA [m] xB [m] yB [m] 0.000 0.00 1.20 0.00 1.20 0.100 0.00 1.15 0.13 1.15 0.200 0.00 1.00 0.25 1.00 0.300 0.00 0.76 0.38 0.76 0.400 0.00 0.42 0.50 0.42 0.500 0.00-0.02 0.63-0.02 time to hit floor: Ball A= 0.495 seconds Ball B= 0.495 seconds magn. of vel.: Ball A= 4.85 m/s Ball B= 5.01 m/s Answers to Problem 3: (1) What is the maximum height reached by the football? 7.72 m (2) What is the range of the football? 45.8 m (3) At what time does the football reach its maximum height? 1.26 sec (4) At what time does the football hit the field again? 2.52 sec (5) What is the ratio of the answer to (3) to the answer to (4)? 0.50 (6) At what speed does the football hit the field? 22.0 m/sec (7) At what angle does the football hit the field? -34.0 deg. (8) Does it hit the field with the same velocity it had initially? no yes or no Score= Instructions: Do the 3 problems that are given in the sheets that follow this TOP SHEET and the sheet with the equations. Try to figure things out by yourself before asking for help. If you get stuck, ask your instructor or use the Help file (for EXCEL related problems). Your answers to the problems will be automatically copied into the indicated cells on this TOP SHEET. Do not try to enter them yourself. If you manage to corrupt your copy of this file, don't get upset; just reload the original file. If you do not complete this exercise during the class time, save your work on a flash drive and finish the work during the week with your team members. When your team is done, print out just this TOP SHEET and give it to me. Make sure the names of all team members are shown. Please submit only one print-out per team . The deadline for turning in this exercise is the end of your Computer Exercise session during the week of September 15th. S This exercise deals with 1-D and 2-D motion with constant acceleration. For your reference, here are the 5 equations of motion along the x-axis that are given in Table 2-1 in your textbook. To obtain the corresponding equations along the y-axis, just substitute y for x....
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- Spring '08