The motion of a particle is described by the equation `x = a+bt^(2)` where `a = 15` cm and
Channel: Doubtnut
Date: 2020-08-23

The motion of a particle is described by the equation `x = a+bt^(2)` where `a = 15` cm and `b = 3 cm//s`. Its instantaneous velocity at time 3 sec will be