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Catapult Lab Help: Calculating Projectile Motion and Energy | Physics Lab Tips
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[QUOTE="scottdave, post: 5903602, member: 618222"] In your handwritten data sheet it is 2.85 meters on trial#1, not 12.85 as you typed. I was wondering how you came up with that average. The definition of [U]hang time[/U], is the total amount of time in the air ( [URL]https://en.wikipedia.org/wiki/Hang_time[/URL] ) That is from time it leaves the catapult until it touches the ground. So hang time would be the total time. But did your teacher define it differently? What do you mean by [U]original time[/U]? With no air resistance, and if launched from ground level, the projectile will spend half of the time going up, and half going down, so your time to peak (in that situation) is half of the total time. So there is going to be air resistance, but those effects may be minimal if the projectile is smooth shaped and has "enough" mass, and the air is calm. So was it launched from ground level, where the distance up equals the distance back down? If the catapult is "short enough" then you could approximate that it was launched from ground level. That may be what you have to do for this particular lab. [/QUOTE]
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Catapult Lab Help: Calculating Projectile Motion and Energy | Physics Lab Tips
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