Mechanics Formulas Flashcards
1
Q
Acceleration
A
t
2
Q
Speed
A
d ÷ t
3
Q
Force
A
F = ma —–> m(v-u) ÷ t
4
Q
Weight
A
mass x gravitational field strength
mg
5
Q
Density
A
p = m ÷ v
p = m/v
where m= mass and v= volume
6
Q
Moment
A
M = f x d
where f = force
d = perpendicular distance
7
Q
Pressure
A
P = F/A
where f = force
A = surface area
8
Q
Pressure (2)
A
P = pgh
where p = density
g = gravity
h = liquid height
9
Q
P1V1 (pressure1 x volume1)
A
P1V1 = P2V2
10
Q
Work Done
A
W = F x d
where f = force
d = distance travelled
11
Q
Kinetic Energy
A
Eĸ = 1/2 mv²
where m = mass
v = speed
12
Q
Change in gravitational potential energy
A
ΔEρ = mgΔh
13
Q
Potential energy
A
PE = mgh
where m = mass
g = gravity
h = vertical height
14
Q
Energy
A
E = Pt
where p = power
t = time
15
Q
Power
A
P = E ÷ t
where e = energy
t = time
