P9: Motion

Description

GCSE Physics Mind Map on P9: Motion, created by Shannon O'Boy on 22/01/2018.
Shannon O'Boy
Mind Map by Shannon O'Boy, updated more than 1 year ago
Shannon O'Boy
Created by Shannon O'Boy about 6 years ago
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Resource summary

P9: Motion
  1. Speed and distance-time graphs
    1. Distance-time graphs can show us the speed a vehicle is travelling.
      1. The gradient of the line tells us the speed of the car.
        1. If the graph has a straight line, the speed is constant.
          1. The steeper the gradient, the greater the speed.
          2. If a graph has a curved line, then speed is changing.
            1. Speed can be calculated at any point by working out the tangent to a point.
            2. If the line is flat, then the vehicle has no speed and is not moving.
              1. Velocity and acceleration
                1. Velocity is speed in a given direction.
                  1. Two vehicles may have the same speed but different velocities dependant on their direction.
                    1. If a vehicle travels in a circular direction, its speed is the same however the velocity is continuously changing.
                    2. Displacement is the distance travelled in a given direction.
                      1. The acceleration of a vehicle is its change in velocity per second.
                          1. Deceleration is when a vehicle slows down.
                        1. Velocity-time graphs
                          1. The gradient of the line shows a vehicles' acceleration.
                            1. When brakes are applied to a vehicle, it begins to decelerate.
                              1. Because of this, the line of the graph will have a negative gradient.
                              2. The area under a velocity-time graph can calculate the distance travelled.
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