Graphs

• Distance-time graph:

  
• Velocity-time graph:

  
• What is the gradient in a distance-time graph?

  Velocity
• What is the gradient in a velocity-time graph?

  acceleration
• What does a sharper gradient mean in a distance-time graph?

  Faster speed
• What does a sharper gradient mean in a velocity-time graph?

  greater acceleration
• What does a negative gradient mean in a distance-time graph?

  Returning back to starting point
• What does a negative gradient mean in a velocity-time graph?

  deceleration
• What does a horizontal line in a distance-time graph mean?

  Stationary
• What does a horizontal line in a velocity-time graph mean?

  constant speed
• What does 0 distance mean in a distance-time graph?

  Back at starting point
• What does 0 velocity mean in a velocity-time graph?

  Stationary
• What does the area under line mean in a distance-time graph?

  nothing
• What does the area under line mean in a velocity-time graph?

  distance travelled
• What does a curved line mean in a distance-time graph?

  velocity is changing (acceleration
• What does a curved line mean in a velocity-time graph?

  acceleration is changing
• How can you determine speed if an object is accelerating on a distance-time graph?

  -Drawing a tangent

  calculate the gradient of the tangent