<em><u>The front of a car is designed to crush in a fairly predictable way during a crash. A lot of the kinetic energy is converted to heat during the metal deformation. However, there is always some springiness in the car's structure, and so there will be a degree of </u></em><em><u>rebound</u></em><em><u>.</u></em><em><u> </u></em>
Explanation:
<em><u>For example, when a car is brought to a stop by friction on level ground, it loses kinetic energy, which is dissipated as thermal energy, reducing its mechanical energy. Figure 2 compares the effects of conservative and nonconservative forces.</u></em>