W.E.P

• the equation for work done is w=fd
• the equation for friction is $F=$$\mu R$
• the equation for potential energy is Ep=mgh
• the equation for kinetic energy is Ek=1/2mv^2
• the conservation of energy states that when no external forces do work on a particle during its motion the sum of the particles KE and Ep remains constant
• the work-energy principal states that the change in the total energy of a particle is equal to the work done
• the equations for power are either P=E/T or P=FV