How does the kinetic and (gravitational) potential energy of cart A compare to
the kinetic and (gravitational)
potential energy of cart B?

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?

From the perspective of an employee that effective channeling of work related information and concerns

How do the forces acting on a boat compare to the force acting on a plane ?