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

 - The forces are balanced, so there is no net force on Terrell.
 - The forces are unbalanced, so there is a net force on Terrell.
To determine if there is a net force on Terrell, look at the forces:
Earth's gravity is pulling Terrell down with a force of 400 N.
The diving board is pushing Terrell 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 Terrell.