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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

(d) 20 m

Aditi Chauhan , 11 Years ago
Grade 10
anser 1 Answers
Jitender Pal

Last Activity: 11 Years ago

(b)
s = at2 - bt3
v = ds/dt = 2at - 3bt2
    a=dv/dt  =2a-6bt
    2a-  6bt =0  =>  t=a/3b

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