Question

pls give ans with full solution

Answer 1

$? \times \frac{?}{?}$
$|12 \binom{?}{?} |$
$\gamma$

Answer 2

$v=\alpha \sqrt{x}\\ \Rightarrow \dfrac{dx}{dt}=\alpha \sqrt{x}\\ \Rightarrow \dfrac{dx}{\sqrt{x}}=\alpha dt\\ \Rightarrow \int_{0}^{x} \dfrac{dx}{\sqrt{x}}=\int_{0}^{t} \alpha dt\\ \Rightarrow 2\sqrt{x}=\alpha t\\ \Rightarrow \sqrt{x}=\dfrac{\alpha t}{2}\\ v=\alpha \sqrt{x}\\ =\dfrac{{\alpha}^2t}{2}\\ v\propto t$