Question

plz solve this question fast.​

Answer 1

the physical quantity is velocity.

distance covered:  A-B= 5 m

                               B-C=0 m          //rest..

                               C-D= 10 m

                               O-D = 15 m

Total distance = O-C = 15 m

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Answer 2

the physical quantity shown by the slope is speed
distance covered from a to b is 5m from b to c is zero and c to d is 10m
avg velocity is 20/10=2 m/s