"ut omnes discant quod erat demonstrandum"

Mon, Dec-9 Relish
Tue, Dec-10 Jedi Trial 3.1
Wed, Dec-11 Parallel Forces
Thu, Dec-12 Parallel Forces
Fri, Dec-13 Inquiries
Sat, Dec-14
Sun, Dec-15
Mon, Dec-16 Inquiries
Tue, Dec-17 Boom Chain
LED BOARD 2020 2019
1.1 Measurement 87
1.2 Math Foundations 75
1.3 Vector Addition 90
2.1 Uniform Acceleration 80
2.2 Graphing Motion 82
2.3 Newton's Laws 79
3.1 Force Body Diagrams 74
3.2 Parallel Forces 0
4.1 Projectile Motion 0
4.2 Circular Motion 0
4.3 Rotational Motion 0
5.1 Work Eff./Power 0
5.2 Energy Conservation 0
5.3 Momentum 0
6.1 Wave Mechanics 0
7.1 Sound Characteristics 0
7.2 Sound Intensity 0
7.3 Doppler Effect 0
7.4 Strings & Tubes 0
8.1 Photoelectric Effect 0
9.1 Fluid Dynamics 0
Current Class Leader: 2019 +2

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Inquiry: Terminal Velocity of Cats

Purpose: To find the terminal velocity of different densities of cats.


  • You will drop three cats of different masses (black, red, and blue) two times at each 0.5 mark on the string.

  • Use the Photogate Timing Mode from the Data Studio Program and enter 0.1 m for the distance between the gates.

  • Under Setup, checkmark only "velocity between gates"

  • Since Vf2 = 2ad you need to make a graph of V2 vs. 2d to get gravity for our slope. Using a Spreadsheet we can graph all three cats on the same graph.

  • We also need to enter a fourth graph that will represent no air resistance.

  • After all three classes have entered their "cat" data into the spreadsheet you can File-Make a Copy of the data for yourself by clicking here: Terminal Cats Spreadsheet

Inquiry Questions:

  1. Print out one terminal velocity graph which contains all three cats and a standard no air-resistance line. Explain the graph. Do heavier objects fall faster or does it depend on the situation?

  2. If we THREW a cat down from our highest height in this inquiry with an initial velocity of 10.0 m/s and we assumed no air resistance what would be the impact speed of the cat?