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Science Department                         Non-uniform speed (Irregular)
Prep.3
                                           The object covers unequal distance
Uniform speed (regular)                    in equal periods of time.

The object covers equal distance           Or the object covers equal distance
in equal periods of time                   in unequal periods of time.

On recording the results of an             On recording the results of an
experiment in which an object              experiment in which an object
moves, the results were as                 moves, the results were as follows
follows table:                             table:

 Distance 2 4 6 8                          Distance 2 6 15 16
     (m)                                      (m)

   Time ( 1 2 3 4                             Time (       1234
     sec)                                      sec)

Constant speed                             Variable speed

 Graphically (distance –time)              Graphically (distance –time)

 d (m)                                     d (m)

                                        T                  T sec
sec
The straight line passing through          7
the original point

   First Term
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