Now you switch places with your friend, who has twice your mass. You give your friend a gentle push so that he swings out over the creek. How long will it be until he swings back to where he started?

A. \(4.5 \mathrm{~s}\)

B. \(3.4 \mathrm{~s}\)

C. \(2.2 \mathrm{~s}\)

D. \(1.1 \mathrm{~s}\)

A rope swing is hung from a tree right at the edge of a small creek. The rope is \(5.0 \mathrm{~m}\) long; the creek is \(3.0 \mathrm{~m}\) wide.