What are the 3 ways acceleration can take place?

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.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?