Motion Graphs: Interpreting Changes

• What does the area under the curve represent?

  • The distance travelled
• How does the steepness of the lines on a distance-time graph relate to the speed of the object?

  • The steeper the gradient of the line, the faster the object is travelling
  • Shallow gradients indicate slower speeds, steep gradients indicate faster speeds
• What are the axes of a velocity-time graph?

  • Vertical axis: Velocity (m/s)
  • Horizontal axis: Time (s)
• What do horizontal lines on a distance-time graph represent?

  Periods when something is stationary
• What does a negative slope on a velocity-time graph indicate?

  Deceleration
• What does the slope of the position-time graph represent?

  The slope of the position-time graph represents the velocity.
• What does a velocity-time graph show?

  How velocity changes over time
• What does a flat line on a velocity-time graph indicate?

  Constant velocity
• What are the key relationships between distance, time, and velocity?

  • Distance: How far you travel
  • Time: How long it takes
  • Velocity: Distance divided by time
• What is the unit of acceleration shown in the acceleration-time graph?

  The unit of acceleration is m/s^2.
• What does the slope of the velocity-time graph represent?

  The slope of the velocity-time graph represents the acceleration.
• If you walk 400 meters in 200 seconds, what is your velocity?

  2 meters per second
• What information is shown on the vertical and horizontal axes of a distance-time graph?

  The vertical axis shows distance (in metres, kilometres, miles etc.) and the horizontal axis shows time (in seconds, minutes, hours etc.)
• What is the independent variable in the velocity-time graph?

  Time (s)
• What are the three main types of motion graphs shown in the image?

  • Position-time
  • Velocity-time
  • Acceleration-time
• How does the steepness of the straight lines on a distance-time graph relate to the speed of the object?

  The steeper the gradient, the faster the object is travelling
• What is the title of the graph?

  Number of Boys and Girls in Sports - 7th Grade
• What should you compare when interpreting the bar chart?

  Bar heights between years and categories
• What does velocity indicate?

  How fast you move and in what direction
• What trend can be observed from 2000 to 2003 regarding girls in sports?

  The number increased from 15 to 35 students
• What does the slope of the position-time graph represent?

  Velocity
• What is the independent variable in the position-time graph?

  Time (s)
• How does a steeper gradient on a distance-time graph affect travel speed?

  It indicates faster travel
• What factors might have contributed to the changes in sports participation over the years shown?

  • Changes in school/community sports programs and funding
  • Increased emphasis on girls' sports and Title IX legislation
  • Societal attitudes and expectations around gender and sports
  • Availability of role models and mentors for girls in sports
• What does a distance-time graph show?

  How far something travels against time
• What years are shown in the graph?

  2000, 2001, 2002, 2003
• What insights can you draw from the differences in the number of boys and girls participating in sports over the years?

  • There were more boys participating in sports than girls in all years.
  • The increase in girls' participation was greater than the increase in boys' participation.
  • This suggests efforts were made to encourage and support girls' involvement in sports.
  • However, there is still a gender gap in sports participation that could be addressed.
• What is the constant speed represented by the flat portion of the graph?

  Constant speed
• In the given graph, what does the interval 6-10s represent?

  Deceleration
• How can you determine the speed from a distance-time graph?

  You need to find the gradient (slope) of the straight lines on the graph
• What does the gradient of a line on a distance-time graph represent?

  Speed of the object
• What does a steady pace in one direction indicate about velocity?

  It remains constant over time
• What does the area under the velocity-time graph equal?

  Displacement
• If the trend continues, what would you expect the number of boys and girls participating in sports to be in 2004?

  The number of boys would continue to increase, and the number of girls would continue to increase at a faster rate, further narrowing the gap.
• What are the key features of a distance-time graph?

  • Vertical axis shows distance (m, km, miles, etc.)
  • Horizontal axis shows time (s, min, hours, etc.)
  • Straight lines represent constant speeds
  • Steepness of lines indicates speed (steeper = faster)
• How are the bars in the chart grouped?

  By year for comparison over time
• What are the three types of motion graphs?

  Position-time, velocity-time, acceleration-time
• What is the relationship between the position-time graph and distance traveled?

  The area under the curve equals distance traveled
• In the given graph, what does the interval 0-4s represent?

  Acceleration
• What are the key features of a velocity-time graph?

  1. Vertical axis: Velocity (m/s)
  2. Horizontal axis: Time (s)
  3. Flat line: Constant velocity
  4. Positive slope: Acceleration
  5. Negative slope: Deceleration