Title: Speed of a Car Objective: You will measure speed of a toy car having a constant velocity from a position and time graph. Apparatus: Toy car, meter stick, paper towel, graph paper, masking tape Background Theory: Motion of an object can be studied by measuring speed, time, and position. When an object is in constant velocity, it is very easy to measure speed of the object by measuring position and time. You will measure speed of a car which moves with a constant velocity. Experimental Method: 1. Cover lab table with a role of paper towel and tape it with a masking tape. 2. Turn on a toy car and let it move on top of paper towel. 3. Mark a position after each second with a pen on the paper towel by following back of the car until the car reaches the end of the lab table. 4. Measure position of the car after each second with a meter stick and fill out the data table. 5. Draw a graph with time in x-axis and position in y-axis. Draw a best fit line and calculate a slope of the graph.Data: Time (sec) |Position (cm) or (Inches) Questions: 1. What are some sources of error? 2. What does the slope of graph represent? 3. Draw a line with a higher speed and a line with a slower speed in the graph paper Write an overall conclusion at the end