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## Homework Statement

In a swing cycle (pendulum), it takes a child 3 seconds to go from maximum velocity to minimum velocity. What is the frequency of the child's motion?

A.80 mHz

B.170 mHz

C.330 mHz

D. 3 Hz

## Homework Equations

T=1/f

## The Attempt at a Solution

This means it takes 3 second to complete half of the cycle, so 6 seconds to complete the entire cycle, and 1/6 cycles then happen per second. So confused. Millihertz???