Cyrtomium falcatum. 1  Aptly named, Japanese holly fern produces fronds that do indeed resemble holly leaves with their glossy, deep green leathery appearance. 2  It needs moist but well-drained soil in a protected location to thrive. 3  It also makes for a good houseplant in climates where it isn't hardy.
A baseball bat is a third-class lever because the fulcrum is on the  end of one side, the effect force is in the middle, and the  resistant force, the load, is at the top.
The current standard for adult baseball bats is called BBCOR (Bat-Ball Coefficient of Restitution). This certification levels the playing field to ensure that composite or alloy bats perform similarly to a traditional wood bat.