Paper 1 Equations Flashcards
1
Q
Acceleration a = v-u/t
A
Acceleration = change in velocity / time
2
Q
Resultant force f = m x a
A
Resultant force = mass x acceleration
3
Q
Weight w = m x g
A
Weight = mass x gravitational field strength
4
Q
Momentum p = m x v
A
Momentum = mass x velocity
5
Q
Wave speed v = f x λ
A
Wave speed = frequency x wavelength
6
Q
Efficiency
A
Efficiency = useful energy transferred by the device/ total energy supplied to the device
7
Q
Kinetic energy KE = ½ x m x v2
A
Kinetic Energy = ½ x mass x (speed)^2
8
Q
Change in gravitational potential energy
ΔGPE = m x g x Δh
A
Change in gravitational potential energy = mass x gravitational field strength x change in vertical height
9
Q
Work done E = F x d
A
Work done = force x distance moved in the direction of the force
10
Q
Power p = e/t
A
Power = work done / time
