Projectile Launcher Mini Project

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Projectile Launcher Mini Project

• 10/22/13

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Bellwork

• If you are only given time (t) and range (dx) how
  can you find vy?

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Projectile Launcher Mini Project

• 10/22/13

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Objective

• Objective To launch an unmodified cotton ball
  to a target that is 1.50 m away

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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

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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

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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.

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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!

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Testing Phase Tomorrow

• Distance is measured from where it lands from the
  target

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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

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Projectile Launcher Mini Project

• (Day 2)
• 10/23/13

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Bellwork

• Who are the targets for the projectile projects?
• Mr. Z. will check off the homework

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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

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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

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Clean-Up

• Masses, scissors, tape, rulers, etc. back to the
  cart
• Stopwatch back in the bin
• Launcher in the trash or take home

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Projectile Launcher Mini Project

• (Day 3)
• 10/24/13

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Bellwork

• How far is CDO bear (the target) going to
  placed from the launching zone?
• 15.0 m (49.2 ft)

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Projectile Project

• Have to hit the target from the air, NOT rolling
  along the ground
• 50.0 cm3, 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

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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!)

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Projectile Mini-ProjectCalculations (In
T-Charts)

• Using your groups data (or another groups) for
  each trial (3 total) find
• a) Find the tennis balls horizontal velocity
• b) Find the tennis balls vertical velocity
• c) Find the tennis balls max height
• d) Find the tennis balls resultant velocity

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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?

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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.

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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?