Question

Multiple Choice:

Answer 1

Dv/dt = $\frac{t* \frac{1}{t}-1*lnt }{ t^{2} } = \\ = \frac{1-+lnt}{t^{2} }$
Velocity attains its maximum at dv/dt = 0, or:
1 - ln t = 0
ln t = 1
$log_{e}t= 1$
t = e
Answer: C)