An empty roller coaster car at an amusement park takes 3 min to make its ride from start to finish. Neglecting friction, a fully loaded car would take
A)less than 3 min.
B)more than 3 min.
C)3 min.

Question

Quizplus · Accepted Answer

Neglecting friction and air resistance, the time taken for a roller coaster to complete its ride is determined by the conservation of mechanical energy, not by its mass. Therefore, both an empty and a fully loaded car would take the same amount of time.

An Empty Roller Coaster Car at an Amusement Park Takes