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# Roller Coaster Floating

SATPHY-KWQBXV

A roller coaster is at the very top of a circular-shaped hill with a radius of $30.0\ m$.

How fast would the roller coaster be going if its wheels were just starting to lose contact with the track at the top of this hill?

A

$3.00\ m/s$

B

$3.20\ m/s$

C

$17.1\ m/s$

D

$19.6\ m/s$

E

$29.4\ m/s$