Does anyone understand how to do this. it’s for ap chemistry.

Explain how to convert from one unit to another in the metric system.

A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground,its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy

The image shows the process of which is used in nuclear power plants. photo attached