Activity Detail
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Falling Down - Adventure 5
 


Activity Overview

Students use the CBR 2™ to study how a change in mass affects the average speed of a falling object. They graph distance as a function of time, and interpret and analyze graphs representing motion.

Before the Activity

  • Connect CBR 2 to the calculator.
  • Launch the Ranger application
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 35 - 36 from the attached PDF file for your class
  • Transfer files to student calculators using TI-Navigator™  "send to class" feature


    		• During the Activity

    		Distribute the pages to your class.

    Follow the Adventure procedures:
    Collect Data:
  • Hold the CBR 2 at eye level 0.5 meters directly above the concave side one coffee filter
  • Drop the filter and start recording distance - time data
  • Graph the data with time on the horizontal axis and distance from CBR 2 on the vertical axis
  • Understand what different sections in the graph represent
  • Repeat the experiment using 5 filters stacked together
  • Examine the Distance-Time plot and see that the stack of 5 coffee filters fell with the highest average speed.
  • Increase in mass caused the speed to increase


    • TI-Navigator activity:
  • Load the activity settings file CBRonFloor.act
  • Students mark points to illustrate what the plot of the coffee filters falling would have looked like if the CBR 2 had been placed on the floor and the filters released above it
  • Students also redraw for other conditions

    		After the Activity

    		Students analyze the results and answer the questions in the worksheet

    Review student results:
  • As a class, discuss average speed, terminal velocity, and air resistance
  • Re-teach concepts as necessary

    		Other Downloads




    view standards alignment
    view textbook alignment

    Subject Area:
    Science : Physical Science : Newton's Laws
    Math : Algebra I : Linear Equations and Functions
    Math : PreAlgebra : Nonlinear Functions
    Math : Middle Grades Math : Algebraic Thinking

    Author:
    Texas Instruments

    Level:
    5-8

    Activity Time:
    45 Minutes

    Device:
    TI-73 Explorer™, TI-Navigator™

    Apps:
    TI-CBL™/CBR™ App

    Software:
    TI Connect™

    Accessories:
    CBR™/CBR 2™, TI Connectivity Cable, Unit-to-Unit link cables

    Other:
    This is Adventure 5 from the EXPLORATIONS Book:
    Adventures in Data Collection with TI-73 Explorer™.

    The following materials are required for this activity:

  • 5 large basket style coffee filters


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