Distance-time graphs

• How do you calculate the gradient on a distance-time graph?

  Gradient= distance travelled / time taken
• What do we use a gradient to calculate?

  Speed on a distance-time graph
• What does a curve tell us on a distance-time graph?

  That the object is constantly increasing in speed (accelerating)
• How do you calculate the speed with a curved distance-time graph?

  Do a tangent and work out the speed by using the equation distance travelled / time taken
• How do you work out the speed at 100m ?

  By calculating the gradient using a tangent