Day 3 - Kinematics Problems Youll recall that weve derived...

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Unformatted text preview: Kinematics Problems Youll recall that weve derived three equations of kinmatics for constant acceleration: ~v f = ~v + ~at, ~x f = ~x + ~v t + 1 2 ~at 2 , v 2 f = v 2 + 2 a ( x f- x ) Because these are vector equations, each one is actually three equations , one for x , one for y , and one for z . To help remember this, even when we do a one-dimensional problem, Im going to ask that you use vector notation. Constant acceleration problems, because youve already done the calculus, are just algebra problems . The trick is to figure out whats being asked for. Kinematics: Discrete vs. Continuous Experimentalists can only measure position at discrete points. That is, they make a table of where an object is when: Time (sec) Position (m) . 1 . 1 x 1 . 1 . 9 . 1 x 2 . 1 4 . 3 . 2 x 3 . 1 8 . 8 . 2 x 4 . 1 16 . 4 . 4 x So what do you think we can do with this? Average vs. Instantaneous Experimentalists cant measure an instantaneous velocity, only...
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This note was uploaded on 04/20/2008 for the course 1017 311 taught by Professor Franklin during the Winter '08 term at RIT.

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Day 3 - Kinematics Problems Youll recall that weve derived...

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