We use long ramps at the back of our school. explain what using the ramps does to the effort force you would need to move a big box of books from the ground to the door. explain the trade-off involved.

Disney, viacom and aol time warner are examples of

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.

If the area of a square has increased by a factor of 16, by how much has each side increased?