A diver off the high board imparts an initial rotation with his body fully extended before going into a tuck and executing three back somersaults before hitting the water. His moment of inertia before the tuck is 16.9 kgm^2, and after the tuck while doing somersaults is 4.2 kgm^2. He takes 1.4 s to execute the somersaults before hitting the water. What is his angular momentum during the dive? (Give your answer in Nm s.) Your Answer: Answer units