Work, Energy and Power — Formula Sheet

W = F s cosθ

W = ∫[x1 to x2] F(x) dx

K = (1/2)mv^2

W = ΔK

p = sqrt(2mK)

U = mgh

U = (1/2)kx^2

F = -dU/dx

K + U = constant

P = dW/dt

P = F · v

1 joule = 10^7 erg.

W = Fs cos θ for constant force.

For a constant force, W = (F cos θ)s = F s cos θ.

It is given by K = (1/2)mv^2.

The work done by a force in displacing a body is equal to the change in kinetic energy of the body: W = ΔK.