Answer:
b. Potential energy is 102.9 J
Explanation:
Given:
Mass of the object is, [tex]m=3\textrm{ kg}[/tex]
Height of the object above ground, [tex]h=3.5\textrm{ m}[/tex]
Acceleration due to gravity, [tex]g=9.8[/tex] m/s²
Potential energy of an object at a height above the ground is given as:
[tex]PE=mgh[/tex]
Plug in 3 for [tex]m[/tex], 9.8 for [tex]g[/tex], and 3.5 for [tex]h[/tex]. Solve for potential energy [tex]PE[/tex].
[tex]PE=3\times 9.8\times 3.5=102.9\textrm{ J}[/tex]
Therefore, the potential energy of the object is 102.9 J.
