Work and Energy...

A father holds his child on his shoulders during a parade. The father does no work during the parade because:

Calculate the work done by the person to push a box with a force of $$20 N$$ over a distance of $$8.0 m$$ in the direction of the force?

Identify the wrong statement about work.

How much work does a person do in pushing a box with a force of 10 N over a distance of 8.0 m in the direction of the force? 

Which of the following is NOT a unit of energy?

Identify the best definition of energy?

Person $$A$$ stands on the right side of a cart, while Person $$B$$ stands on the left side. The cart is initially at rest. Person $$A$$ pushes on the cart with a force of $$22.0 N$$, and Person $$B$$ pushes on the cart with a force of $$33.0 N$$.
The cart, with no other forces acting on it, starts to move and rolls through a distance of $$2.0 m$$ while both people continue to push with their respective forces.
How much work was done on the cart by Person $$B$$?

Define one watt:

A block of mass 10 kg is pulled by a constant horizontal force of 19 N and it is displaced by 15 m across the floor. Calculate the work done.

How much work does a person do in pushing a box with a force of $$20\ N$$ over a distance of $$8.0\ m$$ in the direction of the force?