126.96.36.199.4 The distance–time relationship
4.1.3 National and global energy resources
If an object moves along a straight line, the distance travelled can be represented by a distance–time graph.
The speed of an object can be calculated from the gradient of its distance–time graph.
(HT only) If an object is accelerating, its speed at any particular time can be determined by drawing a tangent and measuring the gradient of the distance–time graph at that time.
Students should be able to draw distance–time graphs from measurements and extract and interpret lines and slopes of distance–time graphs, translating information between graphical and numerical form.
Students should be able to determine speed from a distance–time graph.
MS 4a Translate information between graphical and numeric form
MS 4b Understand that y = mx + c represents a linear relationship
MS 4c Plot two variables from experimental or other data
MS 4d Determine the slope and intercept of a linear graph
MS 4f Understand the physical significance of area between a curve and the x-axis and measure it by counting squares as appropriate
Asthma attack risk for selected student?