the National Science Foundation
The Two-Dimensional Air Drop model shows a Red Cross airplane planning to drop supplies to a small island. As captain of the plane, the user must drop the package at the right moment so that it doesn't fall on the ocean.
The Two-Dimensional Air Drop model was created using the Easy Java Simulations (Ejs) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_murcia_mech_TwoDimensionalAirDrop.jar file will run the program if Java is installed.
Please note that this resource requires
at least version 1.5 of
Two Dimensional Air Drop Source Code
The source code zip archive contains an XML representation of the Two-Dimensional Air Drop model. Unzip this archive in your EJS workspace to compile and run this model using EJS. download 268kb .zip
Last Modified: September 3, 2010
6-8: 4B/M3. Everything on or anywhere near the earth is pulled toward the earth's center by gravitational force.
9-12: 4F/H2. All motion is relative to whatever frame of reference is chosen, for there is no motionless frame from which to judge all motion.
9-12: 4F/H8. Any object maintains a constant speed and direction of motion unless an unbalanced outside force acts on it.
11. Common Themes
6-8: 11B/M1. Models are often used to think about processes that happen too slowly, too quickly, or on too small a scale to observe directly. They are also used for processes that are too vast, too complex, or too dangerous to study.
AAAS Benchmark Alignments (1993 Version)
11. COMMON THEMES
11B (6-8) #3. Different models can be used to represent the same thing. What kind of a model to use and how complex it should be depends on its purpose. The usefulness of a model may be limited if it is too simple or if it is needlessly complicated. Choosing a useful model is one of the instances in which intuition and creativity come into play in science, mathematics, and engineering.
%0 Computer Program %A Esquembre, Francisco %D April 15, 2010 %T Two Dimensional Air Drop Model %7 1.0 %8 April 15, 2010 %U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9972&DocID=1592
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