At the beginning of a dive, a diver is in the layout position with an angular velocity of 100°/s and a moment of inertia of 15 kg·m2. In 0.5 s, the diver tucks and increases angular velocity to 400°/s.
(a) What is the angular momentum of the diver at the beginning of the dive?
(b) What is the diver's moment of inertia in the tuck position?
(c) What was the angular acceleration of the diver moving from the layout position to the tuck position?