GCSE Maths (Edexcel)

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Velocity from Displacement-Time Graphs

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Algebra Graphs

Velocity from Displacement-Time Graphs

5:18 Kinematic Graphs
Spec A15
Previous Trapezium Approximation Next Acceleration from Velocity-Time Graphs
  • Velocity can be determined by calculating the gradient of a displacement time graph
  • Displacement is different from distance, as it can be negative and can decrease with time
  • Positive gradient indicates the object is moving away from the origin, negative gradient indicates the object is moving towards the origin
  • Velocity is equal to the change in displacement divided by the change in time
  • The steeper the gradient of a displacement or distance time graph, the faster the object is moving
  • Instantaneous gradient can be found by drawing a tangent line to the curve
  • The tangent line's gradient represents the instantaneous gradient of the curve
  • The graph can be used to estimate the speed of the object at a specific time
  • The speed is determined by the magnitude of the velocity, and can only be positive

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