Flashcards
Physics - Energy, Power & Work
Cards in this deck (19)
- 1What is the law of conservation of energy?That energy cannot be created or destroyed, but can change from one form to another.
- 2What type of energy does an moving object have?Kinetic energy
- 3What is stored mechanical energy called?Potential energy
- 4When an object is lifted, what is it given?Gravitational potential energy
- 5What is the second type of potential energy?Elastic potential energy
- 6What is chemical energy?energy that is stored in food and other fuels
- 7Name types of energyKinetic, elastic potential, gravitational potential, nuclear, electrical, sound, light, chemical
- 8What is work?A force causing an object to move a given distance, the force must be acting in the same direction as the displacement (s)
- 9What is Kinetic energy associated with?movement; any object with speed has kinetic energy
- 10What two factors that can affect how much kinetic an object has?mass and speed
- 11What is the formula for WORK?W=Fs
(W-work (j); F-force(N); s-displacement (m) - 12What is the formula for Kinetic energy?K= 1/2 mv(v is squared)
KE=kinetic energy (J); m=mass (kg); v--speed (m/s) - 13What is gravitational potential energy associated with?the position that an object has in a gravitational field
- 14What three factors affect how much Potential energy an object has?mass, height, and acceleration due to gravity
- 15What are the main two that differ on earth?mass and height
- 16What is the formula for gravitational potential energy?Ug= mgh (Ug=gravitational potential energy (J), m=mass (kg), g=acc. due to grav. (m/s2), h= vertical height (m)
- 17Give the two formulas for power.power= (change in energy)/time
power= work/time - 18What is energy efficiency?using less energy to do the same amount of work
- 19What is the formula for E.E?e= energy(out)/energy(in) x 100%
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- Description
- Some Physics Formulas and Notes on Kinetic Energy and Power.
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- dominique22
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