# Equations Flashcards

What is the equation that links distance travelled, average speed and time?

distance travelled = average speed × time

d = s x t

What is the equation that links acceleration, change in velocity and time taken?

acceleration = change in velocity ÷ time taken

__a = (v – u)__

t

What is the equation that links force, mass and acceleration?

force = mass × acceleration

F = m × a

What is the equation that links weight, mass and gravitational field strengh?

weight = mass × gravitational field strength

W = m × g

What is the equation that links momentum, mass and velocity? (Higher)

momentum = mass × velocity

p = m × v

What is the equation that links work done, force and distance moved in the direction of the force?

work done = force × distance moved in the direction of the force

E = F x d

What is the equation that connects kinetic energy, mass and velocity?

kinetic energy = ½ × mass × (velocity)^{2}

KE = ½ × m × v^{2}

What is the equation for efficiency?

__(useful energy transferred by the device)__

(total energy supplied to the device)

What is the equation that links gravitational potential energy, mass, gravitational field strength and change in vertical height?

gravitational potential energy = mass × gravitational field strength x change in vertical height

ΔGPE = m × g × Δh

What is the equation that links wave velocity, frequency and wavelength?

wave velocity = frequency x wavelength

v = f x λ

What is the equation that connects wave speed, distance and time?

wave speed = __distance__

time

v = __d__

t

What is the equation that connects power, work done and time taken?

power = work done ÷ time taken

P = __E__

t

What is the equation for moment of a force?

moment of a force = force × distance normal to the direction of the force

What is the equation that connects charge, current and time?

charge = current × time

Q = I x t

What is the equation that connects energy transferred, charge moved and potential difference?

energy transferred = charge moved × potential difference

E = Q × V