what is latent heat and kinetic energy
Latent heat: The heat energy which has to be supplied to change the state of a substance is called its latent heat.
Latent heat does not raise (or increase) the temperature. But latent heat has always to be supplied to change the state of a substance .
The latent heat which we supply is used up in overcoming the forces of attraction between the particles of substance during the change of state. Latent heat does not increase the kinetic energy of the particles of the substance, so the temperature of a substance does not rise during the change of state.
Kinetic energy is the energy possessed by an object because of motion. For example, a fast moving pebble can injure a person or break glass pane of window, energy of moving vehicle, a fast moving wind can damage many house, or wind can move blades of wind mill, etc.