equations Flashcards
(6 cards)
1
Q
kinetic energy
A
0.5 x mass x (speed)^2
1/2mv^2
2
Q
gravitational potential energy
A
mass x gravitational field strength x height
mgh
3
Q
elastic potential energy
A
0.5 x spring constant x (extension)^2
1/2ke^2
4
Q
power
A
work done/time taken
5
Q
work done
A
force x distance
6
Q
efficiency
A
- useful output energy / total input energy
2.useful power output / total power output
