Can someone please help me

GE = ME - ,  which agrees with option C in your list.

Explanation:

The definition of Mechanical Energy (ME) of a system is the addition of the gravitational potential energy (GE) plus the kinetic energy (KE) of the system:

ME = GE + KE

Given that the KE is: ,

solving for GE in the formula above gives:

GE = ME - KE = ME - ,  which agrees with option C

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