An Airplane Flies in a Semi-Circular Arc in Order to Simulate

Multiple Choice

An airplane flies in a semi-circular arc in order to simulate "weightlessness" for its occupants.If the radius of the semicircular path it flies is 3500 m,what is the speed at which the plane flies?

A) 357 m/s
B) 580 m/s
C) 185 m/s
D) 1180 m/s