GCSE P2 Chapter 1

All aspects covered :)

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  • Created by: emma998
  • Created on: 26-02-14 17:13

Distance-time graphs

  • Distance-time graphs can be used to represent the motion of an object
  • Y axis = distance (m)
  • X axis = time (s)
  • Gradient = speed
  • Speed(m/s) = Distance(m) / Time(s)
  • Horizontal line = stationary
  • Straight line sloping upwards = constant speed
  • The steeper the line the faster the speed
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Velocity and acceleration

  • Velocity = speed in a given direction
  • Change in speed or direction causes a change in velocity
  • Acceleration = change in velocity
  • Change in speed or direction causes acceleration
  • Acceleration = (Final velocity(m) - Initial velocity(m)) / time(s)
  • Negative acceleration = deceleration
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Velocity-time graphs

  • Velocity-time grpahs can be used to represent acceleration
  • Y axis = Velocity (m)
  • X axis = Time (s)
  • Gradient = Acceleration (m/s)squared
  • Horizontal line = constant speed
  • Straight line sloping upwards = accelration
  • Straight line sloping downwards = decceleration
  • The steeper the gradient the greater the acceleration 
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Using graphs

  • Velocity-time graphs can also be used to work out the distance travelled
  • The area underneath the line of the graph represents the distance travelled (m)
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