Word equations Flashcards
What is the equation for weight?
weight = mass x gravitational field strength
What is the equation for work done?
work done = force x distance
What is the equation for the force applied to a string?
force applied to a string = spring constant x extension
What is the equation for the moment of a force?
moment of a force = force x distance
What is the equation for pressure?
pressure = force normal to surface / area of that surface
What is the equation for distance travelled?
distance travelled = speed x time
What is the equation for acceleration?
acceleration = change in velocity / time taken
What is the equation for resultant force?
resultant force = mass x acceleration
What is the equation for momentum?
momentum = mass x velocity
What is the equation for kinetic energy?
kinetic energy = 0.5 x mass x (speed)^2
What is the equation for gravitational potential energy?
gravitational potential energy = mass x gravitational field strength x height
What is the equation for power using energy transferred?
power = energy transferred / time
What is the equation for power using work done?
power = work done / time
What is the equation for efficiency using energy transfer?
efficiency = useful energy output transfer / total energy input transfer
What is the equation for efficiency using power?
efficiency = useful power output / total power input