Multiple Choice
In order to simulate weightlessness for astronauts in training, they are flown in a vertical circle. If the passengers are to experience weightlessness, how fast should an airplane be moving at the top of a vertical circle with a radius of 2.50 km?
A) 157 m/s
B) 314 m/s
C) 78.5 m/s
D) 255 m/s
E) 510 m/s
Correct Answer:

Verified
Correct Answer:
Verified
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