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Horizontally Launched Projectiles
- 7. It ’s as easy as rolling off a cliff…
- 10. Predict A B C Which path will the ball follow?
- 12. B A few years ago, researchers went to elementary, middle, and high schools as well as universities and showed students this image and asked them, “ Ignoring air resistance, which of the following correctly shows what an object would do if it rolled off a cliff?
- 13. A B C
- 22. Revisit Our Thinking A B C Which path will the ball follow?
Notas do Editor
- A few years ago some researchers in the U.S. went to elementary schools, junior and senior high schools, and universities and asked them to look at the following: "Ignoring air resistance, which of the following correctly shows what an object would do if it rolled off a cliff?" Figure 1 The breakdown of answers they got was almost exactly the same at all ages. About 60% said number 1 was correct. The object will stop in midair, and then start to fall straight down. Because this is what the Coyote always did in cartoons (and because some people actually referred to it in their explanation of why they chose this answer), the researchers called it the Wile E. Coyote Effect . About 25% said number 2 was correct. The object will move forward at first, but will eventually just fall straight down. Only about 15% answered number 3. The object will continue to move forwards the entire time it is falling.