Physics Lab Report

Purpose Determine the acceleration in a quick sprint. interrogative mood What would the referenceicipants acceleration be if he/she sprints forward in a cocksure direction? Hypothesis/Prediction When a soul sprints forward, it means he/she speeds up. Consequently, the acceleration should be arrogant. When the stop number accelerates at a eternal rate, the acceleration should remain constant. in that respectfore, if the participant is moving toward a positive direction and the speed increases, then the acceleration should be positive and constant. Materials * marrow enter Machine * scout immortalise * memorialize * Ruler * pencil * Graph authorship Carbon paper Procedure * A beak of spotter Tape and a Ticker Tape forge were taken. * Ticker Tape machine was plugged in. * One side of the Ticker Tape was attached to the back of a participant. * The other side of the Ticker Tape was inserted through the Ticker Tape machine. * A piece of carbon paper was move on top of th e Ticker Tape and was pinned on the machine. * The machine was started. * The participant sprinted forward. * The machine was stopped. * The utilize Ticker Tape was collected. * The machine was unplugged. * victimization a ruler, a pencil and the Ticker Tape, all the data were put down on a Data Table. Using the Data Table the spot versus clock time graph and the velocity (instantaneous) versus time graph were plotted. Analysis There were in total of 37 dots recorded on the piece of the Ticker Tape. Every sixth dots represented the 1/60th of one secondmentment. Because of the deprivation of the information, as shown on the Data Table, every third dots were utilise to prosper the amount of data for the more accurate results. Thus, every third dots were apply to represent the half of 0. 1 second. Therefore, on both of the position versus time and velocity (instantaneous) versus time graphs, the x-axis value (the time value) went up by 0. 5 seconds. On the position versus tim e graph, a curved bankers bill was draw payable to the increase of the set-backs speed for each 0. 05 seconds. The base beginning started at 0 second from 0 centimeters and then stopped when the rack upset printings position was at 0. 65 seconds and 80. 1 centimeters. Also, the curved linage on the graph continuously rose up(a) which meant that the runner never moved backward or slowed down. As evidenced by the velocity (instantaneous) versus time graph, the velocity was the lowest when it was 0 cm/s at 0 second and the highest when it reached positive196 cm/s at 0. 5 seconds. The distinction of the velocities was the greatest between 0. 05 seconds and 0. 1 second. Also, the difference was the smallest between 0. 45 seconds and 0. 5 seconds. The two lines of high hat fit were used for more accuracy due to the scattered dots which showed the reason velocities of the particularised time intervals that were plotted on the graph. The initialborn line was illustrated to show the readers the time interval of 0 second to 0. 275 seconds. The second line was used to show the time interval of 0. 275 seconds to 0. 65 seconds.Compared to the second line, the first line was drawn steeper due to the larger differences of the velocities of the specific time intervals. For the answer of this reports question as listed above, when the runner sprinted forward toward a positive direction, the acceleration was able to be calculated from the velocity (instantaneous) versus time graph. In fact, there were two incompatible accelerations during the square time of 0. 65 seconds. Acceleration could be calculated by measuring stick the slopes of the velocity (instantaneous) versus time graph which were represented by the two lines of beat fit.As shown on the graph, the first line was marked as and the second line was marked as . As seen on the Determination of the Acceleration summon of this report, the following mathematical solutions were processed for the solut ion of the question. * dividing line * V2 = 134. 2 cm/s * V1 = 0 cm/s * t 2 = 0. 275 s * t 1 = 0 s * Acceleration = (134. 2 cm/s 0 cm/s) / (0. 275 s 0 s) = 488 cm / s2 * Line * V2 = 196 cm/s * V1 = 134. 2 cm/s * t 2 = 0. 65 s * t1 = 0. 275 s * Acceleration = (196 cm/s 134. 2 cm/s) / (0. 65 s 0. 275 s) = one hundred sixty-five cm / s2With these two accelerations, it mint be analyzed that the runner ran faster during the last 0. 375 seconds than he did during the first 0. 275 seconds. Evaluation This experiment examined the acceleration of a runner when sprinted toward a positive direction. Supported by the evidences and the results of this experiment, one of the two hypotheses stated above was turn up false. The runner sped up in a positive direction in a straight line. Hypothetically, the velocity should have been accelerated at a constant rate so that the result could be a constant acceleration.However, according to the data collected, the runners first acceleration was 488 cm / s 2 from 0 second to 0. 275 seconds and the second one was 165 cm / s 2 from 0. 275 seconds to 0. 65 seconds. Since there were two different accelerations for 0. 65 seconds, there could not be a constant acceleration. Thus, the forecasting of the acceleration being constant was falsified. On the other hand, the other part of the hypothesis was proven true. Theoretically, the acceleration of the runner should be positive because the runner sprinted in a positive direction.As evidenced by the two lines of best fit on the velocity (instantaneous) versus time graph, the slopes were positive due to their upward direction. Hence, since the slopes of the velocity versus time graph represented the persons acceleration, the runners resulting accelerations were positives. To conclude, when the original hypotheses were compared to the calculated results, the first part there should be constant acceleration was rejected, on the contrary, the second part there should be a positive acce leration was accepted.There were several difficulties when this experiment was performed. For example, the Ticker Tape was so fragile that when the runner started to dart, the tape sometimes got ripped. Thus, it was a argufy to gather enough information to observe and analyze the results. Also, because of the rapid consummation of the pin on the Ticker Tape machine, the carbon paper that was placed on top of the Ticker Tape continuously fell off from the machine. In addition, the loud noise produced from the machine created disturbing environment.To improve this lab, go on technologies such as motion sensors could be used to keep the compose atmosphere. Lastly, hand-drawn graphs and hand-measured values arent always correct. Consequently, they can lead the observers to the wrong conclusions. Therefore, victimisation advanced graphing programs such as Graph 4. 4 could be used for more valid results. To summarize, to avoid miscalculations, advanced technologies and softwares mus t be used for more precise and accurate products.