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Lab 2 PH

# Lab 2 PH - Free Fall Velocities Objective To examine the...

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Free Fall Velocities Objective: To examine the principles of uniform acceleration in one dimension by systematic measurements of a falling body's position and instantaneous velocity. We are testing Theory: We are testing for the value of the constant acceleration of gravity by recording the time it takes for a object to fall a measured distance. This lab tests the theory that the average velocity is equal to the instantaneous velocity at the midpoint (with regards to time) between two points. Theoretically, this holds true. Equations 8, 9, and 10 relate the distance traveled over the time traveled, giving v-bar (the average velocity for the given time interval). Equation 11 gives the instantaneous velocity at the midpoint (again, with regards to time). Plugging in the values of Equations 9 and 10 into Equation 8 , we get Equation 12. The simplified value of this Equation, which represents the average velocity over the given time interval is equal to the instantaneous velocity expressed in Equation 11. Thus, on paper, the instantaneous velocity at the time midpoint is equal to the average velocity over the entire distance. What's left is to test it out. Method:

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Lab 2 PH - Free Fall Velocities Objective To examine the...

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