Recent content by Phykid

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    Why a 30 mph vs. 40 mph Impact Makes a Difference

    I didnt until you pointed it out in your first post :) thanks
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    Why a 30 mph vs. 40 mph Impact Makes a Difference

    Brilliant! Thanks for all your help
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    Why a 30 mph vs. 40 mph Impact Makes a Difference

    So how would I go about including the 1.6 into it? Thanks, Phykid
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    Why a 30 mph vs. 40 mph Impact Makes a Difference

    I'm confused, sorry :rolleyes: EDIT: Ignore that, someone posted same time as me
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    Why a 30 mph vs. 40 mph Impact Makes a Difference

    Homework Statement Our homework set today was to find out why is it that when you hit someone at 30mph they have a 20% chance of dying. Yet when you hit someone at 40mph they have a 90% chance of dying. Homework Equations KE = 1/2 M V^2 The Attempt at a Solution First of all i...
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    Work Done by Skier on Ski Slope: Calculate & Find Speed

    So if I am working it out against gravity, would I multiply the 14000 by 10 (gravity)? Thanks. Phykid
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    Work Done by Skier on Ski Slope: Calculate & Find Speed

    Homework Statement A skier with a mass of 70kg rides a chairlift to a point of 20m higher up a ski slope. She then Skis back down to the bottom of the chairlift. Calculate the work done against gravity by the chairlift in carrying the skier up the slope (Assume that g=10n/kg)...
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    Elastic Potential Energy stored in rubber band

    Brilliant :D Thanks alot, for your help & patience :)
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    Elastic Potential Energy stored in rubber band

    Yes, 0.1J if I have done it right. (Please excuse the newbie questions. I'm only 14 and not done this in a year)
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    Elastic Potential Energy stored in rubber band

    Thanks for the very fast reply, but that is a little to complex for me! I just need to know how to find the EPE using the mass & speed. Thanks again, Phykid
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    Elastic Potential Energy stored in rubber band

    Hello Everyone. It has a year since I have worked with Elastic Potential Energy & I have forgotten the formula to work it out. I have this question and would appreciate it if anyone could tell me how to do it, or tell me the formula of how to work it out. So here it is: Rachel pulls...
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