Equations Flashcards
1
Q
Weight =
A
mass x Gravitational field strength
W = mg
2
Q
Force applied to a spring =
A
spring constant x extension
F = ke
3
Q
Acceleration =
A
Change in velocity/ time taken
a = Δv/t
4
Q
Momentum =
A
mass x velocity
p = mv
5
Q
GPE =
A
mass x GFS x height
Ep = mgh
6
Q
Power =
Work done
A
Work done/time
P = w / t
7
Q
Efficiency =
A
Useful power output/total power input
8
Q
Charge flow =
A
Current x time
Q = It
9
Q
Power =
pd
A
Potential difference x current
P = VI
10
Q
Energy transfer =
Power
A
Power x time
E = pt
11
Q
Density =
A
Mass / Volume
p = m/v
12
Q
Work done =
A
Force x distance (along the line of action of the force)
W = Fd
13
Q
Distance travelled =
A
Speed x time
D = vt
14
Q
Resultant force =
A
Mass x acceleration
F = ma
15
Q
Kinetic energy =
A
0.5 x mass x (speed)^2
Ek = 0.5mv^2
