Equations Flashcards
1
Q
Pressure
A
Force / Area
P = F / A
2
Q
Work Done
A
Force x Distance
Wd = F x D
3
Q
Moment
A
Force x Distance from pivot
M = F x D
4
Q
Power
A
Work done / Time taken
P = Wd / T
5
Q
Density
A
Mass / Volume
D = M / V
6
Q
Speed
A
Distance / Time
S = D / T
7
Q
Acceleration
A
Change in speed*velocity / Time
A = V - U / T
8
Q
Resultant Force
A
Mass x Acceleration
Rf = M x A
9
Q
Weight
A
Mass x Gravity
W = M x G
10
Q
Principle of moments
A
F1 x D1 = F2 x D2
11
Q
Gravitational Potential Energy
A
Mass x Gravity x Height
GPE = M x G x H
12
Q
Kinetic Energy
A
0.5 x Mass x Speed*Velocity2
Ke = 0.5 x M x S*V2
13
Q
Hooke’s Law
A
Force = Spring constant x Extension
F = K x E
14
Q
Efficiency
A
Useful Energy Out / Total Energy In
Eff = UEO / TEI
15
Q
Distance/Displacement
A
Area Under Graph
