Symbol or Formula |
Description |
W = Fdcosθ |
work = force (in Newtons) times distance (in meters) times cosine of the angle between the applied force and the direction of motion of the object; this formula is used when the applied force is at an angle to the direction of motion of the object |
Wnet= ΣW |
net work = total sum of all work done |
KE = one-half mv2 |
kinetic energy = one-half times the mass of the object times (the velocity of the object)2 |
Wnet = ΔKE |
net work = the change in the object’s kinetic energy |
ΔKE = KEf - KEi |
change in kinetic energy = the object’s final kinetic energy – the object’s initial kinetic energy |