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AP Physics 1- Work, Energy, & Power Practice Problems ANSWERS FACT: The amount of work done by a steady force is the amount of force multiplied by the distance an object moves parallel to that force: W = F x cos (θ).
7.1. Work: The Scientific Definition. Explain how an object must be displaced for a force on it to do work. Explain how relative directions of force and displacement determine whether the work done is positive, negative, or zero. 7.2. Kinetic Energy and the Work-Energy Theorem.
This video explains the work energy theorem and discusses how work done on an object increases the object’s KE.
The Work–Energy Theorem begins to answer that question by stating that a system gains or loses kinetic energy by transferring it through work between the environment (forces being POWER
Work W is the energy transferred to or from an object by means of a force acting on the object. Energy transferred to the object is positive work, and energy transferred from the object is negative work.
3.1 Work done by a constant force. When the point at which a force acts moves, the force is said to have done work. When the force is constant, the work done is defined as the product of the force and distance moved. work done = force × distance moved in direction of force.
2 Work, energy and power. The work done on an object by a constant force F is F ∆x cos Θ , where F is the magnitude of the force, ∆x the magnitude of the displacement and Θ the angle between the force and the displacement. W = F∆x cos θ. W scalar (no direction): A negative W is energy removed from object.
