Insufficient geometric information to calculate straight-line distance XZ Steps:

• Friction force f = work_{XY} / d_{XY} = 150 J / 3.0 m = 50 N (constant magnitude).
• Distance YZ = work_{YZ} / f = 200 J / 50 N = 4.0 m.
• Path length for P: 3.0 m + 4.0 m = 7.0 m; total work_P = 150 J + 200 J = 350 J.
• Path length for Q: straight-line distance d_{XZ} (unknown); work_Q = f × d_{XZ} = 50 × d_{XZ}.
• Extra work = work_P - work_Q = 50 × (7 - d_{XZ}); cannot compute without d_{XZ}.

Not enough information.

Final answer: Not enough information.