What Makes a Boomerang Come Back?
What Makes a Boomerang Come Back? It is the built-in skew or twist in a boomerang combined with its spinning motion that makes it return to the thrower. At first people...
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How Do Birds Fly?
How Do Birds Fly? Most birds are well suited for flying. First of all, a bird has feathers and wings, and powerful muscles in its breast with which to flap them. A...
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How Do Sailboats Sail into the Wind?
How Do Sailboats Sail into the Wind? Sailboats cannot sail directly into the wind. They can, however, sail upwind by following a zigzag course so that the wind pushes...
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How Do Frisbees Fly?
How Do Frisbees Fly? When a Frisbee soars through the air, its spinning motion is what keeps it flying. Operating on the principle of an airfoil — any flying object...
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