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Speed (s)
Speed is distance per unit time
Speed formula
speed=distance/time
Velocity (v)
Velocity is displacement per unit time
Velocity formula
(v)velocity=(s)displacement/ (t)time
Displacement
Displacement is distance in a given direction

Distance time graph
The slope of the graph is the speed of the object
A distance-time graph for an object moving with constant velocity is a straight line graph

Velocity time graph
Slope is acceleration
Area under graph is distance traveled
A velocity time graph of a body moving with constant acceleration is a straight line
Acceleration (a)
Acceleration is the change in velocity over time
Unit- ms^-2