Work and energy equation
[DOC File]Development of the Work Energy Concept in Mechanics
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Finally, we solve the fabricated work energy equation for the desired variable or relationship. What the Work Energy Theorem is NOT. The student must understand the limitations to the work energy theorem. The concept is SCALAR, not vector. The work energy theorem will never explain why a physical system responds as it does.
[DOC File]Describing Motion Verbally with Speed and Velocity
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For the following questions, begin with the work-energy equation, cancel terms, substitute and solve. 1. A 1423-kg car is moving along a level highway with a speed of 26.4 m/s. The driver takes the foot off the accelerator and the car experiences a retarding force of 901-N over a distance of 106 m. Determine the speed of the car after traveling ...
[DOC File]Work, Energy, and Power
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When is positive work done on an object by an external force? What happens to the object’s mechanical energy? When is negative work done on an object by an external force? What happens to the mechanical energy now? Give an equation that relates total mechanical energy and work. Rewrite the above equation using PE and KE.
[DOC File]General Physics Work and Energy Fall
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The law of conservation of energy can be written as the following: [1] ΣU1 + ΣK1 + ΣWnc = ΣU2 + ΣK2 . U = potential energy. K = kinetic energy. Wnc = non-conservative work. If the speeds of all objects are the same at the beginning and end, then the above equation can be simplified and solved for the non-conservative work: [2] ΣK1 = ΣK2
[DOC File]Work and Energy
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The energy required by the jogger’s body is equivalent to the work done by the jogger, which would be the numerator in the above solution. An alternative equation for power can be developed, also. For example, how much power would a 1400-kg car need to travel at a steady rate of 80 km/h (28.8 m/s)?
[DOC File]AP Physics – Work and Energy
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This is the equation for kinetic energy. This is your basic equation for gravitational potential energy. The equation for work. Remember that if the angle ( is zero, the equation simplifies and becomes the first one. The (r is the displacement. Power equation. Here it’s called average power. Another power equation.
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