... immovable-. The physics Newton built was based on three main ideas: Newton's first law (Galileo's principle of inertia) stating that an object at rest tends to remain at rest unless acted on by an external force; Galilean transformation of inertial frames: (Krane 18), and the law of conservation of momentum (Halliday 237). These ideas seemed self-evident and no one even tried to doubt them, until ... two American scientists, Micheleson and Moorly performed an experiment in which they discovered that the speed of light is the same to any moving object traveling at any ... speed in any d...

• Word Count: 3720
• Approx Pages: 15
• Grade Level: High School

... Newton upset. Descartes posed two problems, the mechanics of impact and of circular motion. Both of these proposed a problem because Descartes analyzed impact in terms of the force internal to a moving body. Newton anticipated that a body will continue in its state unless an external force is acted upon it. This conclusion is still known today as the Conservation of Momentum. Newton did agree that a body in circular ... motion wants to withdraw from the center. By doing a few experiments he constructed a formula; f=m2v/r, that we still use today in mechanics of circular motion. Newton wa...

• Word Count: 3194
• Approx Pages: 13
• Grade Level: High School