Work, Energy and Power Flashcards
1
Q
Work done =
A
F⋅d⋅cosθ
(displacement)
2
Q
for a force to do work
A
there must be movement in the direction of the force
3
Q
A
4
Q
work =
A
force x displacement in directiion of force
OR
force x velocity x time
5
Q
power=
A
work / time
OR
force x velocity
6
Q
gpe=
A
mass x gravityx height
7
Q
efficiency
A
(output / total input) x 100
8
Q
kinetic energy
A
half mass x velocity squared
9
Q
energy usually gets wasted as
A
heat
10
Q
potential energy
A
like stored energy
11
Q
energy in humans
A
chemical energy stored in muscles
12
Q
unit of measurement for work and energy
A
Joules ; J
13
Q
unit for power
A
Watt ; W
