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6 May, 18:06

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)
  1. 6 May, 18:26
    0
    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
  2. 6 May, 18:34
    0
    A. equals the sum of the thermal energy generated by

    friction during the ride.
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Home » Physics » 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.
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