How much work is done by the force of gravity when the book is released?

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

Which type of microscope would allow the viewer to see ribosomes inside a cell?

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four