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Perla: A light package is launched horizontally off a cliff that is at a 'low enough height above the ground that it can be considered
Perla: A light package is launched horizontally off a cliff that is at a 'low enough height\" above the ground that it can be considered in free-fall (the effects of air drag can be ignored). Under these circumstances (see figure below): Q:_find (numerically) the final speed of the package just before it hits the ground. Assumptions (needed to find numerical value of final speed): Launch speed (v0) is 10 mfs, launch height above the ground, H, is 1 m Partb: The same light package is now dropped vertically from a 'much greater height', H' off the ground than before {see figure below). This height H' is so much higher, in fact, that now the effects of air drag on the package cannot be ignored, and the package reaches terminal speed before hitting the ground. Q: Find (numerically) the terminal speed of the package that it reaches at some point before it hits the ground. Assumptions {needed to find a numerical value of the terminal speed}: Mass of the package {m} = .100 kg, the density of air ([3) is 1.00 kg/m3_ the coefficient of drag, {CD} is 0.3, the package is in the shape of a cube with all sides of length {L} of .50 m. assume that g is the same value as usual, 9.81 ms even at this (starting) height, H', above the ground. Part1: You now remove atmosphere from the planet, so that the effects of air drag can be ignored for this dropped package, even given that it has been now dropped from this 'very large height' above the ground, H'. Q: In this situation (no atmosphere), determine (numerically) the final speed of the package right before it hits the ground. Remember, you drop the package from height H', and H' {from the figure above} is 1000 m 1. Getting Started: State the important information and summarize the problem. If possible, include a diagram. Note any assumptions you're making. 2. Davies Plan: Devise a plan of attack before diving into the solution. Break down the problem into smaller, manageable segments. Identify which physical relationships you can apply. 3. Emu Plan: Carry out your plan, explaining each step. The argument should be easy to follow. Articulate your thought process at each step (including roadblocks). Any variables should be clearly defined, and your diagrams should be labeled. 4. Evaluate Solution: Check each solution for reasonableness. There are many ways to justify your reasoning: check the symmetry of the solution, evaluate limiting or special cases, relate the solution to situations with known solutions, check units, use dimensional analysis, andi'or check the order of magnitude of an answer. Note: if you got stuck in the Execute Plan stage and there is no
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