Two identical, 100 kg objects are launched at the same time. One dropped vertically and one launched horizontally. Which one will hit the ground first? A The vertically launched object
B. The horizontally launched object
C They will hit at the same time

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?