P9 Motion
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What are the approximate speeds of movements
Walking 1.5 m/s Running 3.0 m/s Cycling 6.0 m/s
Why does a car moving round a roundabout at a constant speed have a continually changing velocity
Because its direction is constantly changing
What is acceleration
The change of an object velocity per second
How do you calculate acceleration
Change in velocity over time taken
What does the area under a velocity time graph represent
The distance travelled in a given direction
What represents the speed of the object in a distance time graph
The gradient
How can you find the gradient of any curved distance time graph
Using a tangent
What is a tangent
A straight line that touches the line without cutting through it
How do you find the gradient of a tangent
Height/base