Since the kinetic energy is equal to the potential energy then the speed of the object is √2gh.
The term work refers to the product of force and distance moved by force while energy is the ability to do work. The question is incomplete as the figure is not shown.
We know that the kinetic energy is equal to the potential energy hence;
mgh = 1/2mv^2
gh= 1/2v^2
v = √2gh
Learn more about kinetic energy: https://brainly.com/question/999862