# Science

The Millennium Force is the highest roller coaster in North America. It reached a maximum height to 94.5 m. The total mass of the roller coaster car and its passengers is 1380 kg. The speed of the roller coaster is 41.1 m/s at its lowest point on the tracks. What is the efficiency of the roller coaster in transforming gravitational potential energy into kinetic energy?
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My Ek= 1165554.9J and my Ep= 1279322.1J
I got 9.11% as my answer. Is it correct?

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