A roller coaster car travels up and down the hills of its track. Neglecting

friction, the sum of its kinetic and potential energy

A. equals the sum of the thermal energy generated by

friction during the ride.

B. is a function of the length of the track.

C. cannot be calculated after the first hill and valley.

D. must always remain constant.

Question

Physics

Emmett Rhodes

29 April, 00:46

A roller coaster car travels up and down the hills of its track. Neglecting

friction, the sum of its kinetic and potential energy

A. equals the sum of the thermal energy generated by

friction during the ride.

B. is a function of the length of the track.

C. cannot be calculated after the first hill and valley.

D. must always remain constant.

+4

Answers (2)

Know the Answer?

Reyna Russell · Answer 1

A. equals the sum of the thermal energy generated by

friction during the ride.

Marilyn Mata · Answer 2

option D is the correct option

Must always remain constant

Explanation:

According to their law of conservation of energy : it states that in a closed system, the total mechanical energy is always constant although energy may change from one form to another. e. g from potential energy to kinetic energy