Required Equations GCSE Flashcards
1
Q
weight
A
weight = mass x gravitational field strength
W = mg
N = kg x N/kg
2
Q
work done
A
work done = force x distance
W = Fd
J = N x m
3
Q
elastic potential
A
elastic potential = 1/2 x spring constant x extension2
Ee = 1/2 ke2
J = N/m x m
4
Q
speed
A
speed = distance / time
s = d/t
m/s = m / s
5
Q
uncertainty
A
uncertainty = 1/2 x range
mean ± uncertainty
6
Q
kinetic energy
A
kinetic energy = 1/2 x mass x velocity2
Ek = 1/2 mv2
J = kg x m/s
7
Q
gravitational potential energy (GPE)
A
GPE = mass x GFS x height
Ep = mgh
J = kg x n/kg x m
8
Q
formula power using energy
A
power = joules / time
P = E / t
W = J / s