Could anyone me with my project? plz it’s overdue & i’m don’t understand

If you draw a (u) shaped roller coaster

at the beggining of the ramp put potential energy

Going down the ramp, note that the roller coaster car is losing potential energy and gaining kinetic energy.

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d