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from Schr. . In classical mechanics, the momentum of a particle is defined as a product of its mass and its velocity, . . In an isolated system of particles, with no net force acting on the system, the total momentum of the system remains the same. However , we can see from a simple though experiment that the quantity . Useful reviews:. Waxman astro-ph/0103186. Ghisellini astro-ph/0111584. Piran astro-ph/0405503. Meszaros astro-ph/0605208. Useful links. http://www-astro.physics.ox.ac.uk/~garret/teaching/. http://www.cv.nrao.edu/course/astr534/. Two Types of Energy. Energy. Energy . is often defined as the ability . to change matter or to . do work. Work Occurs when a force is applied to an object and the object moves a distance. Work is measured in a unit called joules (J).. Mass energy equivalence. In quantum mechanics , we considered that kinetic energy could be increased only increasing by its velocity. But now dealing with relativistic mechanics we take mass variation into account. Pg. 171 - 176. Kinetic Energy. Recall:. A moving object has the ability to do work because it can apply a force to another object and displace it. The energy possessed by moving objects is called . kinetic energy (. S. R. Kulkarni. An interlude – compactness problem. From sari’s talk (circa 2000). Energy. We measure F~10. -6. erg/cm. 2. Cosmological: D ~ 10. 28. cm. E = . 4. . D. 2. F ~ 10. 51. erg. . In classical mechanics, the momentum of a particle is defined as a product of its mass and its velocity, . . In an isolated system of particles, with no net force acting on the system, the total momentum of the system remains the same. However , we can see from a simple though experiment that the quantity . QOD: What is the difference between potential and kinetic energy? . 1. . energy. – the ability to do work. energy is transferred by a force moving an object through a distance. when work is done on an object, energy is transferred to that object . Law of Conservation of Energy. aka. First Law of Thermodynamics. the . first law of thermodynamics.  is a version of the . law of conservation of energy. , adapted for . thermodynamic.  systems. The . Read 37.9 General Relativity. Relativity Part V. Doppler Effect. Momentum and Energy in Special Relativity. Quiz. E=mc. 2. Ans. : Wolfgang Amadeus Mozart (1756-1791). Born in Salzburg, Austria. Discovered important astrophysical principle that bears his name. LO:. . We will understand that energy can take many forms but the total energy in a system is constant.. . CT: . I . will investigate and calculate the changes of different forms of energy.. . The Law . Essential Question:. How are potential & kinetic energy related?. Standard:. S8P2b. Explain the relationship between potential and kinetic energy.. Concept. Attainment. Activity. [see resources]. Kinetic Energy. The kinetic energy of the center of mass of an object moving through a linear distance is called translational kinetic energy. . KE = ½ mv. 2. As an object rotates it experiences a type of kinetic energy known as rotational kinetic energy. Learning Objectives. I can mathematically rearrange the kinetic energy equation.. I can calculate Kinetic Energy using . the formula.. Kinetic Energy Definition and Formula. The energy an object has due to its motion.