Work, Energy and Power Flashcards
What is “Work Done”
Work done is whenever a force moves an object. If it doesn’t move, then there is no work being done
What is the equation that includes work done, distance moved and force
Work done = force x distance moved
What are the units of Work
Joules (J)
What are the units of force
Newtons (N)
Energy is always…….; this means that “energy cannot be…….or………“but it can be turned from one form to…….
Conserved
Created
Destroyed
Another
Work done =
Energy transferred
When a force acts on an object at 90° to the direction it is moving, is any work being done
No
The size of the force needed to lift an object is equal to it’s……
Weight, measured in Newtons too
What is the equation that links weight, mass and gravity
Weight = mass x gravity
What is the gravitational field strength on Earth (GCSE)
10 N/Kg
What is power
The rate of work done or the rate of energy transfer
What is the equation that links power, time and work done
Work done = power x time
What are the units of power
Watts
What is the equation that links G.P.E, Mass, Gravity and height
G.P.E = mass x g x height
What are the units of G.P.E
Joules (J)
