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motion (average speed (there is not a direct correlation between steepness…
motion
average speed
speed=Distance/time
time=distance/speed
Distance =speedxtime
there is not a direct correlation between steepness of gradient and speed increase
However is steepness increases so does speed
Average speed=initial speed+ final speed/2
rate of change of speed=final speed-initial speed/time taken
/ means divide or over
motion graphs and what we can learn from them
speed time graph
the slope of a speed time graph represents the rate of change of speed
the area under the speed- time graph gives the distance travelled
velocity time graph
displacement time graph
the slope of a displacement time graph give sthe displacement
distance time graph
The slope of a distance time graph gives the speed
distance and displacement
displacement is distance in a specified direction
we say distance is a scalar quantity a quantity with size only
Displacement is a vector quantity: it has size and direction
average velocity=displacement/time
acceleration=final velocity-initial velocity/time
average velocity=initial velocity+ final velocity/2
a negative acceleration is called deceleration