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The displacement of a particle varies with time (t) as: s = at2 – bt3. The acceleration at any given time (t) of the particle will be equal to
(a) 2880 m
(b) 1440 m
(c) 400 m
(b)s = at2 - bt3 v = ds/dt = 2at - 3bt2 a=dv/dt =2a-6bt 2a- 6bt =0 => t=a/3b
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