What I learned the hard way was that some instructions are critical. Take the warning to close the top of your wheeled garbage can before moving it. You know the big ones that are tapered up and get bigger at the top? The lid is so big if you don’t close the lid first and you go to push the can the lid is so big it drags on the ground. At this point you will step on said lid while pushing. This will stop all forwards momentum of the can but your inertia will keep you going and there’s only one place your heading! On a side note they ain’t easy to get out of when your face is smashed into the bottom and your shoulders are wedged against the sides. Seriously who designed these things?!
If you want to do the math, don't forget that work = Kinetic Energy, which in turn is the integral of momentum. Mass times velocity is momentum, but the Work is KE, which is one half mass times velocity squared. When you integrate, don't forget to add + C.Lol. I hate it when I take out the garbage and suddenly become a physics experiment.
I have now also learned that I don’t like math!😁
Today I realized that I need to keep a stash of band-aids in my car's glove box. I reached under the seat for something and sliced a finger on a sharp piece of metal. Fortunately I had a couple of clean paper napkins so I wrapped one around my finger and held it there until I got home.