Objective: Objective: To launch an unmodified cotton ball to a target that is 1.50 m away
Materials: file folder 1 piece of cardboard 5 index cards 5 paper clips 2 rubber bands 50 cm of string 200 g mass masking tape scissors ruler
Requirements Free standing and movable Only can use materials given Masking tape (adhesive use sparingly) Scissors and ruler (for construction only) Will be launched from the floor Group number and names NO trigger needed
Design Phase On a piece of paper draw or sketch your proposed mini project with a 5 sentence description (1 per group). When your group has a design show Mr. Z. to collect your materials. Materials: 5 index cards, file folder, cardboard, 200 g mass, 5 paper clips, 2 rubber bands, 50 cm of string, masking tape (adhesive use sparingly), scissors & ruler (for construction only), and nothing else.
Construction Phase Free standing and movable Only can use materials given Masking tape (adhesive use sparingly) Scissors and ruler (for construction only) Will be launched from the floor Group number and names NO trigger needed You will have three tries to hit the target Hint: Your firing a cotton ball!
Testing Phase: Tomorrow Distance is measured from where it lands from the target
Clean-Up Phase Return any unused materials AND masking tape, scissors & ruler to side counter Place launcher in the cabnet and make sure lab area is clean
Projectile Launcher Mini Project (Day 2) 10/23/13
Bellwork Who are the targets for the projectile projects? Mr. Z. will check off the homework
Testing Your group will be given 1 cotton ball to test with at your lab bench (lengthwise is 1.50 m) You will have 15 minutes to make any adjustments You will be given 1 new cotton ball for the final test
Data Collecting Mr. Z. will measure the distances The “On-Deck” group will be given stopwatches to time how long the ball in in the air for You need to collect data for every group even your own
Clean-Up Masses, scissors, tape, rulers, etc. back to the cart Stopwatch back in the bin Launcher in the trash or take home
Projectile Launcher Mini Project (Day 3) 10/24/13
Bellwork How far is “CDO bear” (the target) going to placed from the launching zone? 15.0 m (49.2 ft)
Projectile Project Have to hit the target from the air, NOT rolling along the ground 50.0 cm 3, before launch –If you are over then it will be launched at the end You may set it manually, –after it is locked into place –then only mechanical power
Calendar Today – Finish the Mini-Project Fri. 10/25 – Work day for the project or review Mon. 10/28 – Launching Day Wed. 10/30 – Review is due Thur. 10/31 – Projectile Test Part 1: Multiple Choice and Short Answer Fri. 11/1 – Projectile Test Part 2: Projectile Problems Mon. 11/4 – Projectile Project Calculations and Analysis due (New due date!)
Projectile Mini-Project Calculations: (In T-Charts) Using your groups data (or another groups) for each trial (3 total) find: a) Find the tennis ball’s horizontal velocity b) Find the tennis ball’s vertical velocity c) Find the tennis ball’s max height d) Find the tennis ball’s resultant velocity
Conclusion: (In paragraph form) What was your furthest distance? How close were you from the target? How successful was your design? What problems did you encounter, during construction and launching? What would you do differently if you did this again? How did this activity help you with the project?
Make-Up Assignment Research five past designs to launch projectiles. (These can include non-mechanical designs.) Write a page (handwritten) in paragraph form that includes: Five different designs that you have researched. The history of the designs. What is the purpose of these designs? Provide a summary on how these helped with your pro.
Reflection Phase 2012 version: (In complete sentences.) 1) What was your furthest distance? 2) How close was this to your prediction? 3) What worked well for your design? 4) What problems did you encounter? 5) What would you do differently if you did this again? 6) How did this activity help you with the project?