slope= ( y2 − y1 ) ( x2 − x1 ) • distance d = velocity ѵ × time t • ѵ= Δd Δt

For answers with units, do not forget to include the units: numeric answer units!

  1. Rolling ball background rectangle major grid lines axes x-axis and y-axis linear regression line data points as rectangles A data points as diamonds C data points as circles B data points as triangles D text layers Rolling ball time versus distance plots for four rolls Time (s) Distance (cm) y-axis labels 0 200 400 600 800 1000 1200 1400 1600 1800 2000 x-axis labels 0 1 2 3 4 5 6 7 8 9 10 The graph shows the time versus distance data gathered for four different ball speeds in laboratory 02.
    1. __________ _____ Calculate the velocity ѵ of ball A.
    2. __________ _____ Calculate the velocity ѵ of ball B.
    3. __________ _____ Calculate the velocity ѵ of ball C.
    4. __________ _____ Calculate the velocity ѵ of ball D.
  2. A RipStik moved at three different velocities (speeds). The data was gathered in the tables and plotted on the graph seen below.
    Three lines on a chart
    1. __________ __________ Calculate the velocity (speed) for the first table (the lowest line).
    2. __________ __________ Calculate the velocity (speed) for the second table (the middle line).
    3. __________ __________ Calculate the velocity (speed) for the third table (the top line).
    4. __________ Which RipStik run is the fastest: top, middle, or bottom line?
    5. __________ Which RipStik run is the slowest: top, middle, or bottom line?
    6. __________ __________ How far will the RipStik travel based on the velocity from the first table 36 seconds?
    7. __________ __________ How long in seconds for the Ripstik to travel 5000 centimeters based on the data in the first table?
  3. The five graphs seen below plot time versus distance for a rolling ball. Time in seconds is on the x-axis. Distance in centimeters is on the y-axis.
    Graphs A B C D E
    1. Explain what is happening with the speed of ball A.
    2. Explain what is happening with the speed of ball B.
    3. Explain what is happening with the speed of ball C.
    4. Explain what is happening with the speed of ball D.
    5. Explain what is happening with the speed of ball E.
  4. Critical thinking: In the RipStik run my velocity varied by small amounts as I moved down the sidewalk. What suggestions do you have for how I might keep a steady velocity?