Student Final Report Concern
My Student Final Project Report is terribly written, badly structured and formatted. This maybe due to the tendency of them doing a group project and handing in one report per group. See the video for details...
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Falling down handphone. Why is it broken falling from high story building even though the force is the same.
A student ask me today, about the effect of distance to the force of an object falling down. In this case it's a about a hand phone, falling down. The question is wouldn't the force be the same, if it's 1 story vs 10 story building? But why if it's higher it will break? I search for force vs momentum and I found out this web page. Nice explanation by 3 physics instructor of some sorts. How is force related to momentum? or the link http://www.physlink.com/Education/AskExperts/ae462.cfm The answer for my student question is that when the handphoen meet the floor at a very short time, the force will be very high due to the short time that the handphoen stopped. If it's a soft surface the handphone will have more time, so the force will be much lower. Here is the most related answer. Newton's 2nd Law tells us that force = mass x acceleration ( F = ma ). Since acceleration is just how velocity changes over time, we can write this as F = m * v/t Multiply both sides by...