Assume all other forces on Owen are balanced. Which statement describes the forces on Owen?

 - The forces are unbalanced, so there is a net force on Owen.
 - The forces are balanced, so there is no net force on Owen.
To determine if there is a net force on Owen, look at the forces:
Earth's gravity is pulling Owen down with a force of 400 N.
The diving board is pushing Owen up with a force of 400 N.
The forces are in opposite directions, and the forces have the same magnitude: 400 N. This means that the forces are balanced, so there is no net force on Owen.