equations Flashcards
1
Q
density
A
mass / volume
2
Q
acceleration
A
change in velocity / time
3
Q
distance
A
speed x time
4
Q
kenetic energy
A
0.5 x mass x velocity2
5
Q
force
A
mass x acceleration
6
Q
momentum
A
mass x velocity
7
Q
work done
A
distance travelled x force
8
Q
power
A
work done / time
9
Q
force exerted by a spring
A
spring constant x extension
10
Q
gravity force
A
gravitational field strength x mass
11
Q
pressure
A
force / area
12
Q
moment of a force
A
force x distance
13
Q
charge flow
A
current x time
14
Q
potential difference
A
current x resistance
15
Q
energy transferred
A
charge x potential difference
16
Q
power
A
potential difference x current
17
Q
power
A
current2 x resistance
18
Q
energy transferred
A
power x time
19
Q
wave speed
A
frequency x wavelength
20
Q
efficiency
A
useful output energy / input energy
