Answer:
A. bouncing ball
B. water in a reservoir
C. book on a table
D. person running
E. falling tree
All of the above
Step-by-step explanation:
Energy is commonly defined as the ability to do work. Mechanical energy is a type of energy possessed by an object when I motion (moving) or in a position (resting).
Mechanical energy has two types viz: kinetic energy and potential energy. Kinetic energy is the energy possessed by a moving object while potential energy is that possessed at a fixed position.
Therefore, in this question, all the examples portrays a moving or stationary object, which makes all an example of mechanical energy. Bouncing ball (moving), water in a reservoir (stationary), book on a table (stationary), person running (moving) etc.