For the first problem, I guess it involves kinetic energy, which is mass times velocity squared time 0.5. So, the formula, I think, becomes force times stopping distance, equals to kinetic energy. Then some conversion, conversion, I came up with that answer. I really don’t know if it is correct. Then, for the second problem, I guess it involves acceleration and negative acceleration. I was trying to apply it to the first problem but I do not know where to put mass or stopping distance. O well, papel. So, basically, it is force equals mass times acceleration. To get the acceleration, you divide the difference between the final and the initial velocity. The initial velocity would be zero because it came from rest. And then, after getting the acceleration, proceed with the force calculation, and then find mass.
Posted on: Mon, 24 Jun 2013 04:27:05 +0000
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