A bird has a kinetic energy of 3 J and a potential energy of 25 J. What is the mechanical energy of the bird?
A
3 J, because mechanical energy is the same as kinetic energyB
22 J, because mechanical energy is the difference of the potential energy and kinetic energyC
25 J, because mechanical energy is the same as potential energyD
28 J, because mechanical energy is the sum of the potential energy and kinetic energy