If gravity is the only force present, what is the total mechanical energy of a
book falling off a shelf at a time when its potential energy is 50 j and its
kinetic energy is 60 j?

Which of the following statement is false ? a.batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c.do not stack batteries on top of each other)d.never put a damaged battery in a dumpster. i