Inelastic collisions actually do conserve energy, but the loss of energy to heat and mechanical vibration is hard to calculate so the math equating energy before and energy after is hard to balance.
The law of conservation of energy is difficult to use for calculate the
effects of a collision because of energy loss
<u>Explanation:</u>
We know that Collisions are of twotypes which is elastic and inelastic. The Law of Conservation of energy can be defined as in isolated system the total energy is said to remain constant and stays conserved over time can be applied on elastic collisions only as they don'tloseenergy and can not be applied on inelastic collisions due to energyloss in them due to heat and mechanicalvibration. Hence, law of conservation of energy can not be used to calculate effects of collision