- A block is a kind of object
- Mechanical energy exerted by an object can be used to push or pull another object
- Hence, mechanical energy exerted by an object can be used to push a block

- Mechanical energy exerted by an object can be used to push a block
- A person is a kind of object
- So, a person can exert mechanical energy to push a block

So, a person can exert mechanical energy to push a block
What form of energy is being used when a person pushes a wooden block across the floor?
- A block is a kind of object 
- Mechanical energy exerted by an object can be used to push or pull another object 
- A person is a kind of object