Equations Flashcards
average speed, distance travelled and time taken
speed = distance travelled ÷ time taken
speed = distance travelled ⁄ time taken
force, mass and acceleration
force = mass x acceleration
F = ma
acceleration, change in velocity and time taken
acceleration = change in velocity ÷ time taken
a = (v-u) / t
momentum, mass and velocity
momentum = mass x velocity
p=mv
density, mass and volume
density = mass ÷ volume
work done, force and distance moved
work done = force x distance moved (in direction of force)
energy transferred and work done
energy transferred = work done
kinetic energy, mass and speed
gravitational potential energy, mass, g and height
gravitational potential energy = mass x g x height
GPE = mgh
weight, mass and gravitational field strength
weight = mass x gravitational field strength
W = mg
pressure, force and area
pressure = force ÷ area
moment, force and perpendicular distance from pivot
moment = force x perpendicular distance from pivot
charge, current and time
charge = current x time
Q = It
voltage, current and resistance
voltage = current x resistance
V=IR
wave speed, frequency and wavelength
wave speed = frequency x wavelength
primary voltage, secondary voltage, primary turns and secondary turns
refractive index, angle of incidence, angle or refraction
n = sin i ÷ sin r
refractive index and critical angle
efficiency, useful energy output and total energy input
pressure difference, density, gravity and depth difference
pressure difference = density x g x depth difference
input current, input voltage, output current and output voltage
input current x input voltage = output current x output voltage
IIVI = IOVO
