On the lutheran church ots mathew mark luke and jhon and in catholic is st. Mary but not 100% sure
When a body is moving in circular path at a
distance r from its center its velocity at any
instant will be directed tangentially. This is
what we call tangential velocity. It is
calculated as follows:
Vt=r(w)
where w = 5 rev/s (2m rad / rev) = 31.42
rad/s
Vt = 0.24(31.42) = 7.5 m/s
There are a total of Forty seven questions in the math section of the psat.