# Physics- Movement and Position

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- Created by: Pena_Iiyambo
- Created on: 26-12-14 13:35

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- Movement & Position
- V= D/T
- V= velocity or speed
- D= distance travelled
- T= Time taken

- The distance travelled is measured in metres and time taken in seconds
- This means speed is measured in METRES PER SECOND (m/s)

- The speed equation can also be rearranged to give two other useful equations.
- Distance Travelled= D= V X T
- Time Taken = T= D/V

- Distance time graphs tell us how the car is travelling depending on its slope
- if it is sloping up to the right this shows a constant or a steady speed
- If the graph is sloping down to the right this is called a NEGATIVE GRADIENT

- if it is sloping up to the right this shows a constant or a steady speed
- Acceleration
- Equation
- Acceleration= Change in velocity/Time taken
- or final velocity - initial velocity/ time taken.
- a= (v-u)/t

- or final velocity - initial velocity/ time taken.

- Acceleration= Change in velocity/Time taken

- Equation
- Velocity
- Speed in a particular direction
- For example if a car is travelling at 50 km/h around a bend its speed is constant but its velocity will be changing as long as that the direction that the car is travelling in is changing

- Speed in a particular direction
- Deceleration
- means slowing down
- this means the decelerating object will have a smaller final velocity than its starting velocity
- E.G if you used the equation for finding the acceleration of an object that is slowing down the answer will have a negative sign.
- a negative sign simply means deceleration

- E.G if you used the equation for finding the acceleration of an object that is slowing down the answer will have a negative sign.

- this means the decelerating object will have a smaller final velocity than its starting velocity

- means slowing down

- V= D/T

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