equations Flashcards
1
Q
kinetic energy
A
1/2 x mass x speed2
2
Q
GPE
A
mass x gravitational field strength x height
3
Q
2 power
A
work done energy transferred
————— ————————
time taken time taken
4
Q
2 efficiency
A
useful energy output
—————————-
total energy input
useful power output
—————————-
total power input
5
Q
density
A
mass
———-
volume
6
Q
wave speed
A
frequency x wavelength
7
Q
weight
A
mass x gravitational field strength
8
Q
work done
A
force x distance
9
Q
force
A
spring constant x extension
10
Q
moment of a force
A
force x distance
11
Q
acceleration
A
change in velocity
————————-
time taken
12
Q
resultant force
A
mass x acceleration
13
Q
momentum
A
mass x velocity
