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AIMS PHY 105 - Lab 2: 1-D Kinematics

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Pre-Lab QuestionsExperiment 1: Distance of Free FallData SheetAuditory Observations of Equally Spaced Hex Nut Pattern:After the impact of the first hex nut on the catch pan, the time between the impacts of the other hex nuts seemed to get shorter. The auditory pattern seemed to speed up.Auditory Observations of Unequally Spaced Hex Nut Pattern:Post-Lab QuestionsLab 2: 1-D KinematicsMiriam LaDowJanuary 26, 2020; 02:00 PMPHY105G81©eScience Labs, 20181-D KinematicsPRE-LAB QUESTIONS1. What is the acceleration of a ball that is vertically tossed up when it reaches its maximumheight?The acceleration of the ball when it reaches its maximum height is -10 m/s2 because theacceleration due to gravity is always -10 m/s2, no matter the direction. 2. If you drop a ball, and then one second later drop a ball identical in mass, size and shape,what happens to the distance between them as they fall?The distance between the two balls increases because the velocity increases due toacceleration from gravity. For example, distance= (a t2)/2 so at the 2-second interval, thefirst ball would have travelled approximately 20 meters and the second ball would havetravelled approximately 5 meters, for a difference of 15 meters. At the 3-second interval, thefirst ball would have travelled approximately 45 meters and the second ball would havetravelled approximately 20 meters, for a difference of 25 meters.3. What does a positive and negative slope represent for a velocity versus time graph?©eScience Labs, 20181-D KinematicsThe slope of a velocity verse time graph represents the acceleration of an object. If the acceleration is positive, then the slope is positive. If the acceleration is negative, then theslope is negative.©eScience Labs, 20181-D KinematicsEXPERIMENT 1: DISTANCE OF FREE FALLData SheetTable 1. Washer Free Fall DataTrial Drop Height (m) Time (s)1 1.6 m 0.43 s2 1.4 m 0.35 s 3 1.3 m 0.28 s Average 1.4 m 0.35 s Auditory Observations of Equally Spaced Hex Nut Pattern:After the impact of the first hex nut on the catch pan, the time between the impacts of the other hex nuts seemed to get shorter. The auditory pattern seemed to speed up.Auditory Observations of Unequally Spaced Hex Nut Pattern:The auditory pattern of the hex nuts seemed to be more constant. The time between the impacts on the catch pan seemed to remain at a steady pace.Post-Lab Questions1. Record your hypothesis from Step 1 here. Use evidence from your results to explain if yourhypothesis was supported or not.When two sets of hex nuts—one set equally spaced and one set unequally spaced—aredropped from the same distance, the noise patterns will be different. There will appear to befaster impacts with the set of equally spaced hex nuts and a more consistent rate of impactwhen the hex nuts are placed at progressively increasing distances. My results do support my hypothesis. When the equally spaced hex nuts were dropped©eScience Labs, 20181-D Kinematicsinto the catch pan, the noise pattern made from the impacts appeared to increase in speed.When the hex nuts were spaced at progressively increasing distances, the noise patternfrom the impacts appeared to have a more consistent pace. 2. What was the difference between the noise patterns for equally spaced hex nuts comparedto the unequally spaced hex nuts?The noise pattern for the equally spaced hex nuts was faster paced than the noise pattern for the unequally spaced hex nuts. When the hex nuts that were equally spaced were dropped, the noise pattern seemed to speed up and when the hex nuts that were unequally spaced were dropped, the pattern was more constant.3. What caused the differing noise patterns?The differing noise patterns were caused by the distance between the hex nuts combinedwith the rate of acceleration due to gravity. When the hex nuts were placed at equaldistances from one another, the velocity of each nut increased when they were dropped dueto the acceleration of gravity. This means that although each succeeding hex nut had to falla greater distance, the length of time that they fell seemed to get shorter because of theincrease in velocity. When the hex nuts were placed at unequal distances, the velocity ofeach succeeding hex nut still increased but they seemed to hit the catch pan in a moreconsistent pattern because the distance between them increased along with the velocity. 4. Define the independent and dependent variables in the experiment.©eScience Labs, 20181-D KinematicsThe independent variable was distance between the hex nuts and the dependent variablewas the auditory pattern the hex nuts made as they fell into the catch pan. ©eScience Labs, 20181-D


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