Name: ______________________________ Science 10 Lab Uniform Motion Date: _______________________________ Period: ______________________________ Question: What can measuring the speed of an object tell us about its motion? Experimental Design: In this lab the speed of toy cars will be determined using a ticker tape timer. Distance is from the time points on the ticker tape. The data is recorded and plotted on a graph to observe the type of motion.. The variables are: Manipulated: _______________________ Reason:____________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ Responding: _______________________ Reason:____________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ Controlled: 1. _______________________, 2. _______________________, 3. _______________________ Reason:____________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ Materials: - Ticker tape - Ticker tape timer - Masking tape Toy cars - Meter stick Observations: Note:In order to accurately record the data the following steps must be taken. The ticker tape timer must be set to 10Hz; this corresponds to every 0.1 seconds 1. Label each one of the points t0, t1, t2, ... etc. as shown above until you have reached the end of your ticker tape 2. Measure the distance from t0 to each one of the points as shown. You must start your measurement from t 0. 3. Record your measurements in the data table below. Be sure to use the proper time interval Table 1.3-1: Distance measured as a function of time from ticker tape of a toy car Time (s) 0 Distance (m) 0 Analysis: Using graphical analysis, determine the average speed of a toy car. Your analysis should include: - A graph representing the distance as a function of time of each of the toy cars. Plot your data on the grid below. Be sure to follow the “graphing guidelines” handout when creating your graph. Be sure to label each axis, provide a title, use and accurate scale, plot your points clearly and draw a line of best fit. - Determine the slope of the line of best fit and algebraically relate your value to the appropriate physics concept. Slope Calculations and Units Conclusion: Provide a brief summary of your results. Ensure to explain how the “slope of the line of best fit” is connected to the type of motion being observed. If there were any sources of error encountered in the lab, please note how it affected the data. __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ Experimental Design Variables 1 2 3 4 Variables stated are limited in their accuracy of the lab. Rationale is limited in explaining the importance of the variable. Variables stated are minimal in their accuracy of the lab. Rationale is minimal in explaining the importance of the variable. Variables stated are moderate in their accuracy of the lab. Rationale is moderate in explaining the importance of the variable. Variables stated are superior in their accuracy of the lab. Rationale is superior in explaining the importance of the variable. Graphical Analysis Distance vs. Time graph Slope Calculation and Explanation Distance vs. time graph is Calculations demonstrate a limited in meeting the limited connection to physics graphing guidelines. Attention equations. Explanation is limited to detail is limited. to the outcomes of the lab. Distance vs. time graph is Calculations demonstrate a minimal in meeting the minimal connection to physics graphing guidelines. Attention equations. Explanation is minimal to detail is minimal. to the outcomes of the lab. Conclusion Explanation of Results Explanation is limited in its expression of the accuracy of the appropriate physics concept being observed by the data Explanation is minimal in its expression of the accuracy of the appropriate physics concept being observed by the data Distance vs. time graph is moderate in meeting the graphing guidelines. Attention to detail is moderate. Explanation is moderate in its expression of the accuracy of the appropriate physics concept being observed by the data Distance vs. time graph is superior in meeting the graphing guidelines. Attention to detail is superior. Calculations demonstrate a moderate connection to physics equations. Explanation is moderate to the outcomes of the lab. Calculations demonstrate a superior connection to physics equations. Explanation is superior to the outcomes of the lab. /4 /4 /4 Explanation is superior in its expression of the accuracy of the appropriate physics concept being observed by the data Section Total /4 Final Analysis Mark /16 Science 10 Lab This is the rubric that will be used to mark your uniform motion lab. Please read through it carefully and ask questions as you need. It is encouraged that you complete your lab early in order to improve on the quality of work by having yourself, your peers, and the teacher proof read your lab prior to being evaluated.