A body moves with speed 20m/sec for 10 sec and then with 30m/sec for some distance. The average
speed may be
(A) 8m/sec (B) 15m/sec (C) 25m/sec (D) all of these are possible
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A body moves with speed 20m/sec for 10 sec and then with 30m/sec for some distance. The average
speed may be
(A) 8m/sec (B) 15m/sec (C) 25m/sec (D) all of these are possible