chapter 1 Flashcards
1
Q
what is the principle of conservation of energy
A
energy cannot be created or destroyed only transferred between energy stores
2
Q
gravitational potential energy
A
mass x gravitational field strength x height
3
Q
kinetic energy
A
o.5 x mass x velocity**2
4
Q
elastic potential energy
A
0.5 x spring constant x extension**2
5
Q
doing work
A
transferring energy
6
Q
work done
A
energy transferred
7
Q
power
A
energy transfer
8
Q
power (equation)
A
energy/time
9
Q
work done (equation)
A
power x time
10
Q
efficiency
A
useful power output/ total power input x100
11
Q
A
