Answer :
the formula for finding potential energy is: f= m*g*h. where "m" is mass of the object in question. "g" is the gravitational acceleration."h" is height above the ground. So, if we put in the values:
[tex]20*10*8[/tex]
[tex]1600[/tex] joules
[tex]20*10*8[/tex]
[tex]1600[/tex] joules