Equation Flashcards
1
Q
power
A
power = work done / time taken = energy transferred / time taken
p = e / t = w / t
2
Q
refractive index
A
snells law n = sin of incident ray / sin of refracted ray
3
Q
energy
A
kinetic energy = 1/2 x mass x velocity squared
4
Q
GPE
A
change in gpe = mass x gravitational force x change in height
E gpe = mgh
5
Q
velocity and g
A
gravitational field strength x height = 1/2 x velocity squared
6
Q
work
A
work done = energy transferred = force x distance moved in direction of force
7
Q
waves
A
velocity = frequency x wavelength
8
Q
Frequency
A
F = 1/t
9
Q
Final speed = initial speed + 2 x acceleration x braking distance
A
V squared = U squared + 2as
