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[Title, period and name]

[Title, period and name]. 10/3/13. Objectives. Objectives: Part 1: Learn how to use a photogate timer and use it to determine the velocity of an object Part 2: To predict where a steel ball bearing will land on the ground. Materials. Materials: [List the lab equipment needed]

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[Title, period and name]

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  1. [Title, period and name] 10/3/13

  2. Objectives • Objectives: • Part 1: Learn how to use a photogate timer and use it to determine the velocity of an object • Part 2: To predict where a steel ball bearing will land on the ground

  3. Materials • Materials: [List the lab equipment needed] • Photogate timer and gate • …

  4. Procedures: (Part 2) • [diagram]

  5. Procedures: (Part 2) • Find the velocity of a steel ball from 1.00 m up the ramp (Part 1) • Measure the height of the table to 4 sig. figs. • Find the time that the steel ball will be in the air for • Use time from step #3 to calculate where the steel ball will land

  6. Data Tables

  7. Data Table: Finding Vx

  8. Data: Calculated Prediction • Diameter of ball: 2.540 cm • Height of Table: ____ • Target distances: a) ___ b) ___ c) ___ for: dr = 1.000 m trials 1) ___ 2) ___ 3) ___ 4) ___ 5) ___

  9. Calculations: (Part 2) Make sure you use the correct UNITS!!! • Calc. #1:[show work] average time (tphoto) • Calc. #2:[T-Chart] velocity (vball = vx) • Calc. #3:[T-Chart] time (tair) [projectile y-component] • Calc. #4:[T-Chart] horizontal distance (dx) [projectile x-component] This is your predicted distance

  10. Testing the Prediction • Place and tape the target on the floor with the “Target Line” at the distance that your prediction calculation.

  11. Order of the lab • Title: • Objectives: • Materials: • Procedures: (Part 2 w/ diagram) • Data Table: (For Part 1) • Data: (For Part 2) • Part 2 Calculations: • Part 1 Calculations: • Conclusion:

  12. Part 2 Calculations: (T-Charts) • Calc. #1: (show work) average time (tphoto) • Calc. #2: velocity (vball = vx) • Calc. #3: time (tair) • Calc. #4: horizontal distance (dx) • Error Analysis: (3 total - show work) • Calc. #5: vertical velocity (vy) • Calc. #6: resultant velocity (vr)

  13. Error Analysis • Measure distances from target (3 total) • Calculation the % error • Show your work • Calc. #5: (T-Chart) vertical velocity (vy) • Calc. #6: (T-Chart) resultant velocity (vr) (target distance) % error = × 100 (predicted distance)

  14. Part 2: Calculations • Calc. #1: (show work) average time (tphoto) • Calc. #2: horizontal velocity (vball = vx) • Calc. #3: time (tair) • Calc. #4: horizontal distance (dx) • Error Analysis: (3 total - show work) • Calc. #5: vertical velocity (vy) • Calc. #6: resultant velocity (vr) Part 1:Calculations (5 total T-Charts) • Calc.: horizontal velocity (vball = vx)

  15. Calculations: (Part 1) For each distance: • Calculate the velocity of the ball in meters per second (m/s) using the diameter of the ball to be 2.540 cm. (5 T-Charts Total)

  16. Conclusion (paragraph form) • Explain the process of finding the velocity of the ball bearing and how you predicted where the ball bearing would land. • Identify ALL variables in the lab as independent, dependent or controlled • How many sig. figs. does each variable have? • How much of a role do you think air resistance and friction had and how would it affect your predicted horizontal distance to the actual distance? • How far off was your prediction in terms of distance and percent error? • What may have caused the ball to be off target? (give at least 3 reasons)

  17. Order of the lab • Title: • Objectives: • Materials: • Procedures: (Part 2 w/ diagram) • Data Table: (For Part 1) • Data: (For Part 2) • Part 2 Calculations: • Part 1 Calculations: • Conclusion:

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