Posted by **Brownie** on Tuesday, January 29, 2013 at 5:55pm.

Given v = 4t - 9t3, find the acceleration when t = 1 s.

acceleration in m/s2 =

My Answer

V'=4-27t2

V"= -54t

V"(1)= -54

acceleration in m/s2 = positive 54

Can you please confirm this is correct????

Thanks

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