# aqa p2 physics

- Created by: Aoife
- Created on: 18-01-11 19:45

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**Distance time graphs**

**the slope on a distance time graph represents speed.**

the steeper the slop the greater the speed.

the speed of a body is the distance travelled each second which is calculated using the equation

speed(m/s)=distance(m)/time taken(s)

velocity and accerleration

**velocity is the speed in a given direction**

**acceleration is change of velocity per second**

we can calculate acceleration using this equation

acceleration(m/s)²=change in velocity/time taken for the change

if the acceleration works out as a negative number it means the body is decelerating- slowing down

- the slope of the line represents acceleration
- the steeper the slope greater the acceleration
- if the slope is negative, the body is decelerating
- the area under the line on the graph represents the distance travelled in a given time
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