A 100 kg rollercoaster car is moving with a speed of 10m/s at position A which is 20m above the ground. Assuming there is no friction or air
resistance on the track, how much total energy should the car have when
it reaches position B, a hill of 10m?

it was given as a lesson and guide for prayer.

if i am correct, your answer choices are:

a. the temperature remains constant

b. the temperature increases at a constant rate

c. heat flows at a constant rate into the system

d. heat flows at a constant rate out of the system

e. no heat flows into or out of the system

if so, then the answer is e. no heat flows into or out of the system.