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WEP Review

Review of work, energy, and power

QuestionAnswer
states that energy is not created or destroyed, only transferred to different forms law of conservation of energy
energy based on position ; not moving potential energy (PE)
energy based on moving kinetic energy (KE)
energy that is sum of PE and KE mechanical energy (ME)
SI unit for work and energy Joules
ability to do work Energy
transfer of energy that causes object to move Work
rate of work done over time Power
SI unit for Power Watts
anything that causes object to accelerate (speed up, slow down, change direction) Force (F)
formula for work on a level surface W = Fd
formula for work on an inclined surface W = F(cos(angle))d
acceleration due to gravity on Earth 10 m/s^2
amount of work done if the object does NOT move O J
this happened to the power if time to finish work decreased Power increased
this happened to the power if time to finish work increased Power decreased
SI unit for mass kilogram (kg)
SI unit for speed/velocity meters/second (m/s)
Where falling object has the greatest PE the top
Where falling object has the greatest KE the bottom
Where falling object has equal amounts of PE and KE halfway down
Created by: cadetjt
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