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.
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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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