Answer: 3.92 joules
Explanation:
Mechanical energy is the sum of energy possessed by a body during motion and at rest. It is measured in joules
M. E = Mass x Acceleration due to gravity x height
Now, since mass of ball = 0.200-kilogram Height = 2.00 meters from the floor
Recall Acceleration due to gravity (g) is 9.8m/s^2
Then, M. E = mgh
= 0.2 x 9.8 x 2.0
= 3.92 joules
Thus, the mechanical energy of the ball is 3.92 joules
