The Pratt & Whitney F110-GE-129 turbofan engine used in the F-16 Fighting Falcon produces approximately 29,000 pounds of thrust with afterburner. Since 1 horsepower (hp) is equivalent to 745.7 watts, and 1 pound of thrust is equal to approximately 4.448 newtons, the horsepower of a F-16 engine can be calculated as:
Horsepower = (29,000 lb * 4.448 N/lb) / (745.7 W/hp) ≈ 17,452 hp
Therefore, the horsepower of an F-16 engine with afterburner is approximately 17,452 horsepower.