# 02 - Motion Position Velocity and Acceleration Lab Two...

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Motion: Position, Velocity, and Acceleration Lab Two Melissa Fung Section 106 Jeannie Shum

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Purpose The object of the lab was to measure the velocity and acceleration of objects and to observe motion in which acceleration is constant and time-varying, as well as, how to use the Linear Fit option in LoggerPro to draw a regression for the scattered data. Theory Velocity measures the speed at which an object moves with respect to time. Its units are in m/s. When an object in free fall reaches its maximum height, the velocity is 0 m/s. Angular velocity is a vector quantity describing the direction of rotational motion. It is defined by the equation ω = 2π / T where T is the period. The period of an oscillation is the length of one cycle of that motion. Acceleration is measured in m/s 2 . It describes the rate at which an object is changing its speed. Constant acceleration is when the acceleration is constant throughout the entire motion despite whatever direction the object may move in. Procedure Plug to make the motion sensor into the Digital 1 input to LabPro. Open up the LoggerPro software. Then, open up the file titled “lab2a” under the Phys 111 folder. The file should display a template for the position vs. time and velocity vs. time plot. Start by collecting some sample. First, hold a book or some notes without letting them move and hit the “Collect” button. A clicking sound should be heard for approximately three seconds. A plot for both graphs should appear after the motion sensor stops clicking. Once succeeding in collecting this data, collect another set of pre-data this time moving a book or paper slowly back and forth. Make sure not to make sudden jerking movements for they can create very jagged spikes in the graph. After being satisfied with both sets of pre-data, the real experiment can begin. To begin, roll a ball down the ramp. This part of the experiment will give motion with constant acceleration. Place the ball at about 0.5 meters from the starting point and collect its motion for about 2
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## This note was uploaded on 07/16/2008 for the course PHYS 111 taught by Professor Cui during the Fall '07 term at UMBC.

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02 - Motion Position Velocity and Acceleration Lab Two...

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