L5 Equations Flashcards
1
Q
Force =
A
Force = mass × acceleration
F=ma
2
Q
Momentum =
A
momentum = mass × velocity
p=mv
3
Q
Speed =
A
Speed = distance ÷ time S = d/t
4
Q
acceleration =
A
acceleration = change in velocity ÷ time
Units: m/s²
a = ∆v/t
5
Q
Force =
A
Force = change in momentum ÷ time
Units: N
F = ∆mv/t
6
Q
Pressure =
A
Pressure = Force ÷ Area P = F/A
7
Q
Stopping distance =
A
Thinking distance + Breaking distance
8
Q
Work (moment) =
A
Work = Force × distance W = F*d
9
Q
Efficiency =
A
Efficiency = (useful power out ÷ useful power in) × 100% Eff. = UPI/TPO * 100%
10
Q
Weight =
A
Weight = mass × gravity W = mg
11
Q
Gradient =
A
Gradient = change in y ÷ change in x Gradient = ∆y/∆x
12
Q
Final velocity
A
Final velocity = initial velocity + (acceleration × time)
v = u + at
13
Q
Final velocity ²
A
Final velocity ² = initial velocity ² + (2× acceleration × displacement)
v² = u² + 2as
14
Q
Wave speed =
A
Wave speed = frequency × wavelength
15
Q
Force =
A
Force = extension × spring constant
