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

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 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.

A 400 kg rollercoaster is on a 20 m hill and is not moving.  At the bottom of the hill, it has a velocity of 10 m/s. How much energy does the rollercoaster have at the bottom of the hill? a58400 J b78400 J c20000 J d98400 J

For the situation described: (1) Simplify the work-energy equation to its proper form. (2) Then identify the letter of the corresponding work-energy bar chart.A sledder (or a roller coaster car) begins from rest on the top of a hill (initial state) and slides to the bottom of the hill (final state). Friction and air resistance influence the motion.

A 400 kg roller coaster is stopped on top of a 20 m hill.  It then races down the hill and at the bottom has a velocity of 15 m/s.  How much energy did the roller coaster lose when it traveled from the top to the bottom of the hill? a78400 J b24800 J c45000 J d33400 J