Formulas Flashcards
1
Q
Speed
A
Speed = distance / time
2
Q
Velocity
A
Velocity = displacement / time
3
Q
Acceleration
A
Acceleration = change in velocity / time
4
Q
Gradient
A
Gradient = acceleration
5
Q
Distance (velocity time graph)
A
Distance = area under graph
6
Q
Total force
A
Total force = mass x acceleration
7
Q
v2
A
v2 = u2 + 2as
8
Q
Weight
A
Mass x g
9
Q
Momentum
A
Momentum = mass x velocity
10
Q
Work
A
Work = energy transferred = force x distance
11
Q
GPE
A
GPE = mass x g x height
12
Q
KE
A
KE = 0.5 x mass x speed^2
13
Q
Efficiency
A
Efficiency = useful energy out / total energy input
14
Q
Wave speed
A
Wave speed = frequency x wavelength
Wave speed = distance / time
15
Q
For a lens, power = ?
A
Power = 1/focal length
