Question

can whole body of kinetic energy be lost in a completely inelastic collision???

Answer 1

In an inelastic collision, for a perfectly inelastic body, the kinetic energy can become zero when a body sticks to another body when it is collided with another body where the other body is very larger than the inelastic body. here during this process, the body converts the part of K.E into P.E and the huge mass absorbs some of the energy thus making K.E=0.[K.E=Kinetic energy],[P.E=Potential energy].

Answer 2

While the total energy of a system is always conserved, the kinetic energycarried by the moving objects is not always conserved. In an inelastic collision, energy is lost to the environment, transferred into other forms such as heat.