Select the option that best completes the following sentence. The amount of gravitational potential energy possessed by an object such as a roller coaster carriage:increases with its speeddecreases with its heightincreases with its heightnever changes

Select all of the options that best complete the following sentence. As a roller coaster carriage descends the first hill:its potential energy is transformed into kinetic energyits kinetic energy increases with its speedthe main force acting on it is gravityits potential energy increasesI'm not sure

A diagram of a roller-coaster track is shown below. Select the position on the track at which a roller-coaster car has the most gravitational potential energy.

The diagram shows the potential energy and kinetic energy of a roller coaster cart at a point located at the top of a large hill. If the cart is initially stationary it will have zero kinetic energy. Based on the height of the first hill the cart has 520 kiloJoules of potential energy.The point marked X represents the bottom of the hill where the cart's potential energy is equal to 0 Joules, but the kinetic energy is 480 kiloJoules.Based on the Law of Conservation of Energy which explanation provides support for what MOST LIKELY occurred?A 60 kiloJoules of kinetic energy were gained due to gravitational acceleration.B 40 KiloJoules of heat energy were released to the surroundings due to friction.C 420 KiloJoules of potential energy were transferred to heat energy.D 40 KiloJoules of chemical energy from fuel were released as heat energy.

A body of mass is taken from earth surface to the height h equal to twice the radius of earth (Re), the increase in potential energy will be : (g = acceleration due to gravity on the surface of earth)

Calculate the total energy of the system , if point  is at a height of  from the ground and the roller coaster weighs .