Paper 1 Flashcards
1
Q
Speed
A
Speed = Distance / Time v = x/t
2
Q
Acceleration
A
Acceleration = (final velocity - initial velocity) / time a = (v-u) / t
3
Q
Force
A
Force = mass x acceleration F = ma
4
Q
Weight
A
Weight = mass x gravitational field strength W = mg
5
Q
Momentum
A
Momentum = mass x velocity p = mv
6
Q
Gravitational potential energy
A
Gravitational potential energy = mass x gravitational field strength x height
GPE = mgh
7
Q
Kinetic energy
A
Kinetic energy = 0.5 x mass x (velocity)2
KE = 1/2mv2
8
Q
Efficiency
A
Efficiency = useful energy / total energy Efficiency = useful power / total power
9
Q
Wave velocity
A
Wave velocity = frequency x wavelength
v = fλ
