a) Work done
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4 Terms
define work done including energy
define work done including force
when energy is transferred
when a force applied to an object moves the object in the line of action of the force
state the formula for work done
state the formula for work done when the force is applied to an object at an angle to the direction of the object’s motion
W = Fx
work done on an object (J) = force applied to the object (N) × distance the object moved in the line of action of the force (m)
W = Fcosθx
work done on an object (J) = force applied to the object in the direction of the object’s motion (N) × distance the object moved (m)
state the principle of the conservation of energy
total energy in a closed system remains constant
energy cannot be created or destroyed, only transferred from one store to another
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