Work energy and power & materials Flashcards
1
Q
work done =
A
force x distance
2
Q
what is a closed system
A
system in which all the energy transfers are accounted for. Energy or matter cannot enter or leave the system
3
Q
principle of conservation of energy
A
states the total energy of a closed system remains constant, energy cannot be created or destroyed, can only be transferred from one for to another.
4
Q
GPE=
A
mgh
5
Q
power=
A
(work done / time taken) or (Force x velocity)
6
Q
elasticity
A
the property where object returns to normal shape once stress or force is removed.
7
Q
hookes law
A
extension of an object is proportional to the force that causes it. F=kx
