pluto, the dwarf planet, is 5.9 billion kilometers from the sun. explain how a model showing the gravitational pull on pluto
would differ from your model of earth's orbit.

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

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?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.