Answer:
B. - 0.328
Explanation
Potential Energy: This is the energy of a body due to position.
The S.I unit of potential energy is Joules (J).
It can be expressed mathematically as
Ep = mgh........................... Equation 1
Where Ep = potential energy, m = mass of the coin, h = height, g = acceleration due to gravity,
Given: m = 2.74 g = 0.00274 kg, h = 12.2 m, g = 9.8 m/s²
Substituting these values into equation 1
Ep = 0.00274×12.2×9.8
Ep = 0.328 J.
Note: Since the potential energy at the surface is zero, the potential Energy with respect to the surface = -0.328 J
The right option is B. - 0.328
