10. A roller coaster is pulled up a hill by a chain attached to a motor. The total roller coaster’s mass is 5,000 kg. If it takes 20 seconds to pull the roller coaster up a 50-meter hill, how powerful is the motor? *

A. 49,000 N

B. 2,450,000 Nm.

C. 122, 500 Watts

D. None of the above

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