Answer: 1.28 m
Explanation:
the gravitational potential energy of an object is given by
\(E=mgh\)
where
m is the mass of the object
g is the gravitational acceleration
h is the height of the object with respect to a reference point.
In this problem, m=1.00 kg, g=9.8 m/s^2, and the energy of the object measured with respect to the ground level is E=12.5 J. Therefore, by re-arranging the equation we can calculate h, the height of the object above the ground level:
\(h=\frac{E}{mg}=\frac{12.5 J}{(1.00 kg)(9.8 m/s^2)}=1.28 m\)
