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By Jason Cooper

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Drop the new shape into the water from the top of the measuring stick, and time its descent. Remove the clay, and gently pat it dry. To Finish Step 1 Tape the measuring stick to the outside of the jar, leaving four inches remaining at the top. Make sure the stick is securely fastened. It shouldn’t move during the experiment. 54 Mold the clay into a cube, a star, a flat patty, or any other shape you can think of to repeat the test. Compare your observations of each shape. Decide which shape was slowest and which was fastest.

Compare your observations of each shape. Decide which shape was slowest and which was fastest. List the shapes in order from slowest to fastest. 55 Sp ee d Li m its A ro un d th e Wor ld N early every roadway has a speed limit, so the speed we travel is not always up to us. But with a little knowledge of physics and plenty of energy, you can choose your own path, build up tons of momentum, and accelerate to the end of the world and back! So, experiment to find out what will take you where you want to go, and where you’ll stop, no one knows!

Diving Down In this experiment, you will determine which shapes are able to slip more quickly through a fluid and which are more affected by drag. What do you notice about the shapes that fell faster compared to those that were slower? Do your observations support what you have learned about streamlining and water resistance? Step 2 Roll the modeling clay into a sphere. From the top of the measuring stick, drop the sphere into the water. Time how long it takes for the clay to reach the bottom of the jar.

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