Answer:
The mechanical energy of the ball is 112.667 J
Step-by-step explanation:
Mechanical energy = kinetic energy + potential energy
Where:
kinetic energy =
m
potential energy = mgh
So that for the given ball, its mechanical energy =
m
+ mgh
= m(
+ gh)
But, m = 400 g = 0.4 kg, v = 23.0 m/s, g = 9.81 m/
and h = 1.75 m.
Mechanical energy of the ball = 0.4(
(
) + 1.75*9.81)
= 0.4(264.5 + 17.1675)
= 0.4 x 281.6675
= 112.667
The mechanical energy of the ball is 112.667 J.