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Homework Help
Introductory Physics Homework Help
Work, Power and Energy assignment marked wrong somehow? :(
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[QUOTE="Cutter Ketch, post: 6302794, member: 515910"] It goes wrong when you calculate the time. First, what time did you want to calculate? The time to stop the tool, right? You used the velocity at impact, which is fine, but you used the distance it fell which has nothing to do with the deceleration at impact. Even if that had been the right distance, you can’t use d=v t. That is only true if the velocity is constant. I believe what you want to do here is assume the acceleration is constant. Can you relate constant acceleration, initial velocity, distance, and time? [/QUOTE]
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Homework Help
Introductory Physics Homework Help
Work, Power and Energy assignment marked wrong somehow? :(
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