P2 1 - Motion

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  • Motion P2 1
    • Distance-time graphs P2 1.1
      • Key Points:
        • The distance-time graph for any object that is           1) stationary is a horizontal line    2)moving at a constant speed is a straight line that slopes upwards.
          • The gradient of a distance-time graph for an object represents the object's speed.
            • Speed in metres per second,m/s = distance travelled in metres,m       --------------- time taken in seconds,s
      • distance         ---------------- speed x time
    • Velocity an d acceleration P2 1.2
      • Key Points:
        • Velocity is speed in a given direction
          • Acceleration is changeof velocityper second. The unit of acceleration is the metre per second squared (m/s^2)
            • Acceleration = changeof velocity divided by time taken.
              • Deceleration is the changeof velocity per second when an object slows down.
      • a = v-u ---------t
  • The distance-time graph for any object that is           1) stationary is a horizontal line    2)moving at a constant speed is a straight line that slopes upwards.
    • The gradient of a distance-time graph for an object represents the object's speed.
      • Speed in metres per second,m/s = distance travelled in metres,m       --------------- time taken in seconds,s

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