![]() ![]() Then plot that average velocity as the dependent variable on a velocity-time graph plot time as the independent variable.ī) To create a position-time graph from a velocity-time graph find the average velocity of each interval. The values may be different simply due to rounding during the calculations.Ī) To create a velocity-time graph from a position–time graph divide the displacement of each interval by the time at of each interval the results will be the average velocity of each interval. It should however be exactly the same as the displacement of the cart at the interval. However, if the acceleration deviates positively then the velocity-time graph will gain a curved or parabolic shape.ĥ) Based on the data from the velocity-time graph, the cart is experiencing non-uniform motion.Ħ) The average acceleration of the cart is 2.4m/s² or 240cm/s².ħ) The area underneath each interval was relatively the same as the displacement of the cart at that interval. Using the tangent method or mid-point method to find the rise/run will give you the average velocity of the cart at that interval.Ģ) For constant acceleration, the average velocity for the interval will be equal to the instantaneous velocity at the half-time of the interval.ģ) The average velocity for an interval on a velocity-time graph must be plotted on one specific point on the line to represent instantaneous velocity.Ĥ) If the acceleration is constant, then the velocity-time graph will be a linear line. This would eliminate the variation of places the car could start and finish from and the chance of the car falling off the board near the end of its run.ġ) The average velocity for an interval can be found by finding the slope of that interval. ![]() Also placing a groove on the board which the car could run along on the ramp would allow the car to have a constant start and end track on the board. The first improvement would be the creation of a tool to allow one person to operate both the ticker tape timer and the release of the car.īy creating a release button that would operate both devices it would synchronize them and ensure the data was precise. There are two major improvements that can be proposed to make the data collected from this experiment more precise and accurate. Though it may not seem drastic because the time measurements being recorded are so minuscule such a synchronization problem can significantly change in average velocities per interval. This created the possibility for the cart to be released slightly before or after the ticker tape timer was activated. ![]() The cart is released and the operation of the ticker tape timer was done by two different group members. Inherent Error: There’s always the potential for inherent errors during an experiment and this one is not an exception. 10s.ħ) The displacements of each time interval were recorded in the table.Ĩ) The average velocity was calculated and recorded for each time interval.ĩ) The graph of the velocity for the cart was plotted at the half-time intervals.ġ0) The line of best fit was drawn through the points.ġ1) The average acceleration of the cart was calculated by finding the slope of the velocity-time graph in m/s² Observations Time Interval (s)Īverage Velocity Per Interval Time Elapsed (s)Īverage Velocity Overall (Total Displacement) 1) A table was drawn to record time, displacement, and average velocity.Ģ) The ramp, recording timer, and cart were set up in the test environment.ģ) A length of recording tape was attached to the cart and threaded through the ticker timer.Ĥ) The timer was started and the cart was released down the ramp so that the recording tape was pulled through the timer.ĥ) Steps 3 and 4 were repeated until each person in the group had a tape of the motion.Ħ) The marking tape was analyzed by marking the starting dot t= 0 and dividing the tape into equal time intervals. ![]()
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