Asecond package is thrown downward from the plane with a vertical speed v1 = 72 m/s. what is the magnitude of the total velocity of the package at the moment it is thrown as seen by an observer on the ground? answer in units of m/s.

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

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?