Mechanical Energy is defined as the "total" amount of potential and kinetic energy in a system. Consider a car as a system. Describe a the various types of energy in a car. Be sure to include how energy ENTERS the system and how energy LEAVES the system​

50.)the diagram below represents the wave fronts produced by a point source moving to the right in a uniformmedium. observers are located at points a and b.compared to the wave frequency and wavelength observed at point a, the wave observed at point b has a(1) higher frequency and a shorter wavelength(2) higher frequency and a longer wavelength(3) lower frequency and a shorter wavelength(4) lower frequency and a longer wavelength