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Arroyo 1 Mikayla Arroyo Period 6 1-26-10 Newton, Bernoulli, or Archimedes Newton’s, Bernoulli’s, and Archimedes’ laws and principles are essential to our understanding of life and physics. Such as, when we can throw a ball harder, we make it go further, why objects float or sink, and how a wing of an aircraft or bird helps it fly. Out of the three physics concepts, Newton’s laws are the most important, Bernoulli’s principle is the second most, and then Archimedes’ principle Newton’s first law is ‘an object at rest remains at rest and an object in motion remains in motion at a constant speed and in a straight line unless acted upon by an unbalance force’. His second law of motion is, ‘acceleration of an object depends on the mass of the object and the amount of force applied’. Finally Newton’s third law of motion is the well known saying, ‘for every action there is an equal and opposite reaction’. Newton’s laws are the most important and essential because we use them everyday and are essential to life. Although the other principles are important, Newton’s laws explains the reason why we can jump, walk, swim, hit a ball with a bat to help it fly further and launch planes into space. It also explains why we need airbags. Without knowing Newton’s laws, it will be difficult getting where we are today and understanding why we can do these things. Arroyo 2 Bernoulli’s principle is ‘as the speed of a moving fluid increases, its pressure decreases’. This is important because this helps explain how the transportation of aircrafts and birds work. The Bernoulli principle affects the wings of the aircraft or bird. For instance, the pressure under the wing builds up and creates a higher pressure which results in lift. This help a bird or plane fly. What also happens, is the air going over the top is moving faster, creating a lower pressure, which adds on the affect of lift. Archimedes’ principle is last out of the three concepts, but still is important. The Archimedes principle is ‘ the buoyant force on an object in a fluid is an upward force equal to the weight of the volume of fluid that the object displaces’. This is significant because it helps determine how much how much water to put in your bath, to . Although all three concept s are important to know, Newton’s laws effect us the most in our daily lives, then the Bernoulli’s principle, and last is the Archimedes principle.