2. a car accelerates uniformly from +10.0 m/s to +50.0 m/s over a distance of 225 m. how long did it take to go that distance? show all your work, including the equation used, given and unknown quantities, and any algebra required. make sure your answer has the correct number of significant figures.

Phase changes are chemical changes. true or false

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?

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface