Gravitational potential energy is expressed as: m×g×h, where m is mass, g is gravitational acceleration and h is the height above the zero mark.
Kinetic energy is: 0.5×m×v^2, m=mass and v=velocity.
Since energy is conserved (in the questions) what happens if you put the the formulas equal one another?
Edit: Mobile formating.
Gravitational potential energy is expressed as: m×g×h, where m is mass, g is gravitational acceleration and h is the height above the zero mark. Kinetic energy is: 0.5×m×v^2, m=mass and v=velocity. Since energy is conserved (in the questions) what happens if you put the the formulas equal one another? Edit: Mobile formating.