.@profcooley shows everyone how it is done with some amazing hammer swinging in the bed-of-nails demo. What a swing, and what an explosion of cinder block! Thanks to the laws of physics, I am just peachy. @SMUPhysics #PHYS1010 https://twitter.com/drsekula/status/1057062266837835776/video/1 https://chirp.cooleysekula.net/attachment/52378