If the kinetic energy of the 40kg box is 784 J, what is the velocity before it strikes the ground?

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

What occurs during a combustion reaction

True or false graphs must include scales that increase by the same amount