PLEASE HELP The energy diagram shows the change in energy during a chemical reaction. Which statement best describes the total energy change of the system? (IMAGE PROVIDED)

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

Most short-period comets do not have randomly oriented orbits because

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.