7.4: Procedures
- Page ID
- 29153
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)You will drop the g-Ball and several objects, and compare the acceleration of these items in air.
Setting the Standard
-
Draw a table in which to record the data for the g-Ball. Do not fill in data until you have read the instructions for obtaining that data.
|
Distance (meters) |
Trial 1 (seconds) |
Trial 2 (seconds) |
Trial 3 (seconds) |
Average Time (seconds) |
Average Acceleration \(m/s^2\) |
|---|---|---|---|---|---|
|
1/2 |
|||||
|
1 |
|||||
|
2 |
-
Place the bathroom rug on the floor or ground, under the place where you will be dropping the g-Ball.
-
Practice with the g-Ball so that you know how it works prior to starting the trials for your data. Drop the g-Ball 3 times from each of the heights listed in your data table, and record the time shown on the g-Ball. This is the time it took for the g-Ball to fall to the floor once released.
-
Calculate and record the average time for each of the heights from which you released the g-Ball.
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Use the equation in the introduction and algebra to solve for the average acceleration (a). Calculate and record the average acceleration of the g-Ball for each distance dropped.
Testing Everyday Objects
-
Choose 6 objects of different masses and sizes; do not use the g-ball. Discuss how you will compare the acceleration of these objects when they are dropped from a height through air. Also, consider how you will compare the data for the 6 objects to the g-Ball. Draw a data table for the data you will be collecting.
|
Object |
Predicted Rank |
Trial 1 (seconds) |
Trial 2 (seconds) |
Trial 3 (seconds) |
Average Time (seconds) |
|---|---|---|---|---|---|
-
List the 6 objects in your data table. Indicate next to each object, the predicted rank order for these objects to fall to the ground, from shortest time (1st) to longest time (6th).
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Find a safe location from which to drop your 6 objects, a height of two to three stories if possible. Measure and record this distance in meters under your data table.
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Proceed with dropping your 6 objects, 3 times each. Calculate and record the average time for each object.