A0.500 kg rock is whirled in a vertical circle of a radius 0.60 m . the velocity of the rock at the bottom of the swing is 4.0 m/s . what is the acceleration
a 3.3 m/s^2
b 26.6 m/s^2
c 13.3 m/s^2
d 6.6 m/s^2

Explanation:

Centripetal acceleration is:

a = v² / r

a = (4.0 m/s)² / 0.60 m

a = 26.6 m/s²

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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