EVERYDAY SCIENCE

Detailed explanation-1: -The force of gravity causes a roller coaster to go slower and slower when it climbs a hill, the roller coaster is decelerating or going slower. The acceleration of a roller coaster depends on its mass and how strong is the force that is pushing or pulling it.

Detailed explanation-2: -At the top of a roller coaster, the car goes from moving upward to flat to moving downward. This change in direction is known as acceleration and the acceleration makes riders feel as if a force is acting on them, pulling them out of their seats.

Detailed explanation-3: -Once the cars are put into motion (potential is allowed to be converted into kinetic energy), they will not stop again until the brakes are applied at the end of the ride. The cars are slowed (negative acceleration) eventually to a stop, because of unbalanced forces due to friction acting on them.

Detailed explanation-4: -PE is converted to KE as the object falls. The total energy of the object at each position is always the same. It is not possible for the falling object to have more than 100 J of total energy, unless it is acted upon by an outside force.